Top 5 Cool Mist Humidifiers for Cough Relief Now

Does a nagging cough keep you up at night? You are not alone. Many people struggle with dry, irritated throats, especially during colder months or when allergies strike. That constant tickle makes sleeping and even just relaxing feel impossible. You know you need relief, and you’ve heard that a cool mist humidifier can help soothe that cough.

But walking into an electronics store or browsing online feels overwhelming. Which model is best for cough relief? Do you need a small one for your bedside table or a large one for the whole house? The sheer number of features, sizes, and price points makes choosing the right cool mist humidifier for your cough feel like a headache in itself. You want something effective, quiet, and easy to clean, but how do you separate the good ones from the mediocre?

This guide cuts through the confusion. We will break down exactly what makes a cool mist humidifier effective for easing cough symptoms. You will learn the key features to look for, understand the differences between popular types, and discover our top recommendations for finding true nighttime comfort. Get ready to breathe easier and finally silence that persistent cough.

Top Cool Mist Humidifier For Cough Recommendations

No. 1
LEVOIT Top Fill Humidifiers for Bedroom, 2.5L Tank for Large Room, Easy to Fill & Clean, 28dB Quiet Cool Mist Air Humidifier for Home Baby Nursery & Plants, Auto Shut-off for Safety, 25H
  • ๐™๐™–๐™จ๐™ฉ ๐™ƒ๐™ช๐™ข๐™ž๐™™๐™ž๐™›๐™ž๐™˜๐™–๐™ฉ๐™ž๐™ค๐™ฃ ๐˜ผ๐™ก๐™ก ๐™‰๐™ž๐™œ๐™๐™ฉ: Runs for up to 25 hours on low thanks to its SUPER LARGE capacity of 2.5 liters. The soothing moisture helps quickly relief congestion and dry throat.
  • ๐™€๐™–๐™จ๐™ฎ ๐™๐™ค๐™ฅ-๐™๐™ž๐™ก๐™ก ๐˜ฟ๐™š๐™จ๐™ž๐™œ๐™ฃ: LEVOIT listened to feedback from humidifier customers and upgraded to a easy top-fill design. No need to turn the water tank over or spilling water all over the place. Just ONE-STEP to remove the cover and easily fill the tank.
  • ๐™ˆ๐™ช๐™˜๐™ ๐™€๐™–๐™จ๐™ž๐™š๐™ง ๐™›๐™ค๐™ง ๐˜พ๐™ก๐™š๐™–๐™ฃ๐™ž๐™ฃ๐™œ: Easily clean the inside of the tank through its big opening. The detachable designs and simple construction of the base leaves no hard-to-reach corners when cleaning. Maintaining health has never been this easy.
  • ๐™‰๐™ค ๐˜ฟ๐™ž๐™จ๐™ฉ๐™ช๐™ง๐™—๐™–๐™ฃ๐™˜๐™š ๐™’๐™๐™š๐™ฃ ๐™Ž๐™ก๐™š๐™š๐™ฅ๐™ž๐™ฃ๐™œ: The Classic 160 cool mist humidifier is perfect for sleeping, with noise level as low as 26dB and all lights off. Helps create a peaceful and quiet atmosphere The perfect humidifier for bedrooms and baby nurseries.
  • ๐˜พ๐™ช๐™จ๐™ฉ๐™ค๐™ข๐™ž๐™ฏ๐™š ๐™”๐™ค๐™ช๐™ง ๐™ˆ๐™ž๐™จ๐™ฉ: Customize the mist output with just one knob and adjust the direction freely with the 360 degree nozzle. Enjoy full control of your air humidifier.
No. 2
Homvana Humidifiers for Bedroom Home, 3.6 L Cool Mist Top-Fill 34H Super Long Time, Quiet 23dB, Baby Humidifier, Oil Diffuser for Large Room, House, Plant, Nursery, Office, BPA FREE, Ultrasonic (Grey)
  • [3-in-1 Humidifier Meets All You Expect] Cool Mist Humidifier+Aromatherapy+Mood Light, purchase for once to satisfy all you expect! Let Homvana H101 be the best companion in your bedroom.
  • [Unique SilentSpray, Undisturbed Sleep] The humidifier applies the display-off sleep mode and the exclusive SilentSpray tech to ensure noise less than 23dB. Those most sensitive babies can also sleep deep and soundly all night.
  • [100% Certified Safety] The humidifier gives all your family members the 0-Risk & BPA-free humidification. Furthermore, the Auto shut-off tech banishes all dry running or fire risks. Therefore, even for babies, it's perfect!
  • [Easy to Refill & Clean] The top-filling design which combines the detachable tank with the 5.3-inch wider opening, spares you from getting your table wet, making filling and cleaning as easy as a piece of cake.
  • [Soothing Aroma] No need to buy an extra aroma diffuser now! Simply adding 2-6 drops of essential oil to the built-in pad, the fragrance will slowly fill the room with your favorite scent, making it a wonderland for yoga, mindfulness, and meditation.
No. 3
AquaOasisยฎ Cool Mist Humidifier (2.2L Water Tank) Quiet Ultrasonic Humidifiers for Bedroom & Large room - Adjustable -360 Rotation Nozzle, Auto-Shut Off, Humidifiers for Babies Nursery & Whole House
  • ๐—œ๐— ๐— ๐—˜๐——๐—œ๐—”๐—ง๐—˜ ๐——๐—ฅ๐—ฌ ๐—”๐—œ๐—ฅ ๐—ฅ๐—˜๐—Ÿ๐—œ๐—˜๐—™! Want to eliminate the suffering from the terrible effects of dry air? No need to struggle with cheap flimsy and leaky desk humidifiers. This quality ultrasonic humidifier is the one youโ€™re looking for. It pumps relief immediately and effectively! โ€“ Feel better in minutes!
  • ๐—ข๐—ฃ๐—˜๐—ฅ๐—”๐—ง๐—˜๐—ฆ ๐—œ๐—ก ๐—ง๐—ข๐—ง๐—”๐—Ÿ ๐—ฆ๐—œ๐—Ÿ๐—˜๐—ก๐—–๐—˜ โ€“ ๐—ฆ๐—Ÿ๐—˜๐—˜๐—ฃ ๐—Ÿ๐—œ๐—ž๐—˜ ๐—” ๐—•๐—”๐—•๐—ฌ! No humming, whistling, or crackling as this durable Whole-House Humidifier steadily and efficiently dispenses the soothing cool mist you crave. SLEEP better, BREATHE better, LIVE better! Youโ€™ll wish you found this years ago!
  • ๐— ๐—จ๐—Ÿ๐—ง๐—œ๐—ฃ๐—Ÿ๐—˜ ๐— ๐—œ๐—ฆ๐—ง ๐—ฆ๐—˜๐—ง๐—ง๐—œ๐—ก๐—š๐—ฆ + ๐Ÿฏ๐Ÿฒ๐Ÿฌ ๐—ฃ๐—˜๐—ฅ๐—–๐—˜๐—ก๐—ง ๐—ฅ๐—ข๐—ง๐—”๐—ง๐—œ๐—ก๐—š ๐—ก๐—ข๐—ญ๐—ญ๐—Ÿ๐—˜ โ€“ This Humidifier was created with YOU in mind. Your environment, your needs, and your preferences! Designed with a super simple control dial and 360ยฐ rotating nozzle so that you can fully control and customize the mist output and mist flow direction. ๐—”๐—จ๐—ง๐—ข๐— ๐—”๐—ง๐—œ๐—– ๐—ฆ๐—›๐—จ๐—ง ๐—ข๐—™๐—™ โ€“ No need to babysit this Humidifier. We know youโ€™ll want to shut this off before the tank runs out... Rest assured you can ๐—ฆ๐—˜๐—ง ๐—œ๐—ง ๐—”๐—ก๐—— ๐—™๐—ข๐—ฅ๐—š๐—˜๐—ง ๐—œ๐—ง!
  • ๐Ÿฎ.๐Ÿฎ๐—Ÿ ๐—Ÿ๐—”๐—ฅ๐—š๐—˜ ๐—ช๐—”๐—ง๐—˜๐—ฅ ๐—ง๐—”๐—ก๐—ž โ€“ ๐—™๐—œ๐—Ÿ๐—ง๐—˜๐—ฅ ๐—™๐—ฅ๐—˜๐—˜ โ€“ ๐—™๐—˜๐—”๐—ง๐—จ๐—ฅ๐—˜๐—ฆ ๐—” ๐—Ÿ๐—œ๐—™๐—˜๐—ง๐—œ๐— ๐—˜ ๐—ช๐—”๐—ฅ๐—ฅ๐—”๐—ก๐—ง๐—ฌ! Made with an impressive 2.2L super large water tank that keeps your Room-Humidifier right on chugging for over 26 hours on a single fill!
  • ๐—›๐—”๐—ฆ๐—ฆ๐—Ÿ๐—˜-๐—™๐—ฅ๐—˜๐—˜ ๐—Ÿ๐—œ๐—™๐—˜๐—ง๐—œ๐— ๐—˜ ๐—ฅ๐—˜๐—ฃ๐—Ÿ๐—”๐—–๐—˜๐— ๐—˜๐—ก๐—ง! We take tremendous pride in our expert workmanship and stellar customer service record, and we promise to treat you like family - even for gifts! In addition to our lifetime replacement, if you aren't happy with your purchase, we will simply refund your money - no questions asked!
No. 4
DREO Humidifiers for Bedroom, 3L Top Fill 30H & 26dB Quiet Runtime for Large Room, Cool Mist Ultrasonic Humidifier with Humidity Sensor, Night Light for Home, Baby, Nursery, Plants, New Edition
  • ๐…๐จ๐ซ๐ ๐ž๐ญ ๐š๐›๐จ๐ฎ๐ญ ๐œ๐จ๐ง๐ฌ๐ญ๐š๐ง๐ญ ๐ซ๐ž๐Ÿ๐ข๐ฅ๐ฅ๐ฌ: With a 3L tank and convenient top-fill design, this humidifier large room for baby offers up to 30 hours of long run time humidification in sleep mode, ensuring dry air is no longer an issue for your family, plants, and baby.
  • ๐‹๐ž๐š๐ฏ๐ž ๐๐ซ๐ฒ๐ง๐ž๐ฌ๐ฌ ๐›๐ž๐ก๐ข๐ง๐: This cool mist humidifier for large room releases a mist at 250ml/hr, projecting up to 40 inches high with its 360ยฐ rotating nozzle. It effectively covers up to 300 sq ft, making dry air a thing of the past.
  • ๐’๐ฅ๐ž๐ž๐ฉ ๐๐ž๐ž๐ฉ๐ฅ๐ฒ, ๐ง๐ข๐ ๐ก๐ญ ๐š๐Ÿ๐ญ๐ž๐ซ ๐ง๐ข๐ ๐ก๐ญ: Enjoy a serene sleep with DREO's 26dB (in Sleep Mode) whisper-quiet air humidifier, crafted for your baby's ultimate comfort. Tailor your space with adjustable ambient lighting that can be turned on or off as needed.
  • ๐”๐ฅ๐ญ๐ซ๐š๐Ÿ๐ข๐ง๐ž ๐ฆ๐ข๐ฌ๐ญ, ๐ž๐ฏ๐ž๐ง ๐œ๐จ๐ฏ๐ž๐ซ๐š๐ ๐ž: Powered by Ultrasonic Tech, this humidifiers for bedroom emits a fine 5ฮผm mist with 2.4MHz high-frequency atomization. It evenly humidifies the room, keeping every corner refreshed and moist without dampening your furniture.
  • ๐’๐ฉ๐š-๐ฅ๐ข๐ค๐ž ๐œ๐จ๐ฆ๐Ÿ๐จ๐ซ๐ญ ๐ซ๐ข๐ ๐ก๐ญ ๐š๐ญ ๐ก๐จ๐ฆ๐ž: Transform your living space into a spa with this cool mist humidifier, featuring an aroma pad tray for essential oils. Enjoy calming aromas paired with perfect humidity for ultimate peace.
No. 5
BOXING 3L Cool Mist Humidifier, Ultra Quiet 20dB for Bedroom, Baby & Office, Top Fill Air Humidifier for Home Office & Indoor Plants, 30H Runtime, Essential Oil Tray, Night Light, BPA-Free, White
  • ๐™€๐™›๐™›๐™ค๐™ง๐™ฉ๐™ก๐™š๐™จ๐™จ ๐™‡๐™ค๐™ฃ๐™œ-๐™‡๐™–๐™จ๐™ฉ๐™ž๐™ฃ๐™œ ๐™๐™š๐™ก๐™ž๐™š๐™›: Experience unparalleled comfort with massive 3L tank which delivers 30 hours of continuous mist. Say goodbye to congestion, dry throat, and restless nights for good. Ideal humidifiers for bedroom, nursery and plants!
  • ๐™Š๐™ฃ๐™š ๐™Ž๐™ฉ๐™š๐™ฅ ๐™๐™ค๐™ฅ-๐™๐™ž๐™ก๐™ก: Just lift and pour water through top large opening! Filling the tank within seconds. No need to turn over the water tank and no more spills or wet floor. Easily enjoy the soothing cool mist with BOXING humidfier
  • ๐™Š๐™ฅ๐™ฉ๐™ž๐™ค๐™ฃ๐™–๐™ก ๐™‰๐™ž๐™œ๐™๐™ฉ ๐™‡๐™ž๐™œ๐™๐™ฉ: Designed to provide just the right amount of light for those late-night bathroom visits or checking on your little one, it won't disrupt your sleepโ€”or theirs. Prefer complete darkness? Simply turn it off with ease. Perfect for baby.
  • ๐™”๐™ค๐™ช๐™ง ๐˜ฟ๐™–๐™ž๐™ก๐™ฎ ๐™€๐™จ๐™˜๐™–๐™ฅ๐™š: Drained from a long day? Carve out a moment of pure peace. Add a few drops of your favorite essential oil to transform your space into a sanctuary. This is more than a humidifierโ€”it's a journey to relaxation for your mind and body
  • ๐™’๐™๐™ž๐™จ๐™ฅ๐™š๐™ง-๐™Œ๐™ช๐™ž๐™š๐™ฉ ๐™Š๐™ฅ๐™š๐™ง๐™–๐™ฉ๐™ž๐™ค๐™ฃ: Advanced noise-reduction chip with a near-silent noise level of just 20dB, this humidifier is perfect for bedrooms and offices. Set it, forget it, and enjoy uninterrupted peace wherever you work or rest.
No. 6
MegaWise Ultrasonic Cool Mist Humidifier SK7620 - 1.5L Capacity, Whisper-Quiet Operation, Adjustable Mist Output, Auto Shut-Off - Ideal for Home, Office, Baby Room, and Bedroom
  • 0.5 gal Water Tank: Provides up to 20 hours of continuous cool mist, perfect for maintaining optimal humidity levels in small to medium-sized rooms.
  • Ultrasonic Technology: Operates quietly, ensuring a peaceful environment in bedrooms, nurseries, and offices without disturbing your sleep or work.
  • Adjustable Mist Output: Easily control the mist level to suit your needs, from a gentle mist for a light refresh to a stronger output for more intensive moisture.
  • Auto Shut-Off for Safety: The humidifier automatically shuts off when the water level is low, preventing damage to the unit and ensuring safe operation.
  • Compact and Stylish Design: With its sleek and modern appearance, this MegaWise Cool Mist Humidifier fits seamlessly into any room decor, offering both functionality and aesthetic appeal.
No. 7
LEVOIT - Humidifiers for Bedroom - Quiet (3L Water Tank) - Cool Mist/Top Fill/Essential Oil Diffuser/25Watt - Home/Large Room - 360ยฐ Nozzle - Rapid Ultrasonic Humidification for Baby Nursery/Plant
  • ๐—Ÿ๐—”๐—ฅ๐—š๐—˜ ๐Ÿฏ๐—Ÿ ๐—ช๐—”๐—ง๐—˜๐—ฅ ๐—ง๐—”๐—ก๐—ž: Still be bothered by congestion, coughing, or dry mouth when sleeping? With a 25W power rating, the impressive 3-liter tank provides 25 hours of moisture, helping you sleep comfortably for 3 nights with one single refill.
  • ๐—˜๐—”๐—ฆ๐—ฌ ๐—ง๐—ข๐—ฃ-๐—™๐—œ๐—Ÿ๐—Ÿ ๐——๐—˜๐—ฆ๐—œ๐—š๐—ก: With Levoit's upgraded Top-Fill design, there's no need to turn over the water tankโ€”no spilling water all over the floor. Just remove the cover and fill the tank with ease.
  • ๐Ÿฎ-๐—œ๐—ก-๐Ÿญ ๐——๐—œ๐—™๐—™๐—จ๐—ฆ๐—˜๐—ฅ & ๐—›๐—จ๐— ๐—œ๐——๐—œ๐—™๐—œ๐—˜๐—ฅ: Add 10โ€“15 drops of your favorite essential oils to the base chamber to create a fragrant at-home spa.
  • ๐—จ๐—Ÿ๐—ง๐—ฅ๐—”-๐—ค๐—จ๐—œ๐—˜๐—ง ๐—ข๐—ฃ๐—˜๐—ฅ๐—”๐—ง๐—œ๐—ข๐—ก: Sleep in near silenceโ€”no need to tolerate hums and whistles. The Dual 150 operates quietly, creating a soothing and peaceful sleeping atmosphere for you every night. And when the water runs out, the humidifier automatically shuts off.
  • ๐—ฆ๐—œ๐— ๐—ฃ๐—Ÿ๐—˜ ๐—ž๐—ก๐—ข๐—• & ๐—ก๐—ข๐—ญ๐—ญ๐—Ÿ๐—˜ ๐—–๐—ข๐—ก๐—ง๐—ฅ๐—ข๐—Ÿ: Use the knob to control the mist output and the 360ยฐ nozzle to direct the mist anywhere you like.
No. 8
Dreo Humidifiers for Bedroom, 4L Top Fill for Large Room, 36H Runtime, 28 dB Quiet Supersized Cool Mist Air Humidifier for Baby Nursery, Plants, Indoor, Night Light, Easy to Clean & Fill, White
  • ๐Ÿฐ๐—Ÿ ๐—Ÿ๐—ฎ๐—ฟ๐—ด๐—ฒ ๐—ง๐—ฎ๐—ป๐—ธ ๐—ณ๐—ผ๐—ฟ ๐—–๐—ผ๐—ป๐˜๐—ถ๐—ป๐˜‚๐—ผ๐˜‚๐˜€ ๐—–๐—ผ๐—บ๐—ณ๐—ผ๐—ฟ๐˜: Enjoy quiet sleep without congestion, coughing, or dry mouth, DREO baby humidifier's ultrasonic atomization brings noise down to 28dB, while its 4L tank provides up to 36 hours of moisture without the need to refill.
  • ๐—ก๐—ฒ๐˜…๐˜-๐—š๐—ฒ๐—ป ๐—›๐˜‚๐—บ๐—ถ๐—ฑ๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ฃ๐—ฒ๐—ฟ๐—ณ๐—ผ๐—ฟ๐—บ๐—ฎ๐—ป๐—ฐ๐—ฒ: Powered by DREO's Dual-intake and 4-inch mist outlet design, this humidifier for large room creates a supersized mist of up to 40 inches tall for humidifying bedrooms, while bringing faster dry air relief to help you breathe easy and healthy.
  • ๐—•๐—ฟ๐—ถ๐—ป๐—ด ๐—™๐—ฟ๐—ฒ๐˜€๐—ต๐—ป๐—ฒ๐˜€๐˜€ ๐—”๐—น๐—น-๐—ฎ๐—ฟ๐—ผ๐˜‚๐—ป๐—ฑ: Thanks to its high-frequency atomization process, DREO humidifiers for bedroom releases 5ฮผm Ultrafine mist and lighter mist particles, allowing humidity to spread evenly across the room without wetting surfaces.
  • ๐—˜๐—ฎ๐˜€๐˜† ๐—ง๐—ผ๐—ฝ ๐—™๐—ถ๐—น๐—น ๐——๐—ฒ๐˜€๐—ถ๐—ด๐—ป: This air humidifier allows you to fill up without having to flip the tank or spill water on the floor. Its modular design is easy to remove and install, giving you a hassle-free cleaning experience.
  • ๐Ÿฏ-๐—ถ๐—ป-๐Ÿญ ๐—›๐˜‚๐—บ๐—ถ๐—ฑ๐—ถ๐—ณ๐—ถ๐—ฒ๐—ฟ: DREO cool mist humidifiers are perfect companions for a healthier life, from helping you breathe easier, to making your own aromatherapy sessions, to changing the mood of your room with its ambient light (essential oils not included).

Choosing the Best Cool Mist Humidifier for Your Cough

When a cough bothers you, especially at night, a cool mist humidifier can bring much-needed relief. These devices add moisture to the air. Moist air soothes dry throats and nasal passages. This guide helps you pick the right one.

Key Features to Look For

Smart features make a big difference in how well a humidifier works for cough relief.

  • **Mist Level Control:** You need to adjust how much mist the machine puts out. Some nights you need a little mist. Other nights you need more. Look for adjustable settings.
  • **Run Time and Tank Size:** A larger water tank means the humidifier runs longer. If you use it all night, a big tank prevents it from shutting off too soon. Check how many hours it runs on one fill.
  • **Quiet Operation:** Noise is a major factor, especially when you are trying to sleep with a cough. Look for models advertised as “whisper-quiet.” Check decibel (dB) ratings if provided.
  • **Easy Cleaning:** Cleaning prevents mold and bacteria growth. A wide tank opening makes scrubbing easier.
  • **Auto Shut-Off:** This is a safety feature. When the water runs out, the machine should turn itself off automatically.

Important Materials in Humidifiers

The materials used affect safety and durability. Most cool mist humidifiers use plastic.

Plastic Quality Matters

Look for **BPA-free plastic**. BPA is a chemical sometimes found in plastics. Choosing BPA-free plastic keeps the water cleaner. Durable plastic lasts longer, saving you money over time.

Filter Type (If Applicable)

Some models use wicking filters to clean the water before misting. Other models use ultrasonic technology that needs no filter. If it uses a filter, note the replacement cost. Filters add to the long-term cost of ownership.

Factors That Improve or Reduce Quality

Good design and maintenance directly affect how well the humidifier helps your cough.

Improving Quality: Design and Technology

Ultrasonic humidifiers often create a finer mist. This fine mist travels well through the air. Some high-quality units include an essential oil tray. Adding a few drops of eucalyptus oil can boost cough relief.

Reducing Quality: Maintenance Issues

If you skip cleaning, the humidifier can spray germs or mold into the air. This makes your cough worse! Poor quality units might develop mineral buildup quickly, which is hard to remove. Always use distilled water if your model suggests it, as tap water causes white dust.

User Experience and Use Cases

Think about where and when you need the humidifier most.

Nighttime Use

For bedroom use, prioritize quietness and a built-in timer. A soft nightlight feature can be helpful, or you might prefer one with no light at all to keep the room dark for sleeping.

Daytime Relief

If you use it in a living room during the day, focus on the tank size. You want it to run for many hours while you work or relax. A unit with a visible water level lets you check the supply easily.

Using a cool mist humidifier correctly helps break up congestion and calms irritated airways. You should feel a difference in your breathing within a few nights of consistent use.


10 Frequently Asked Questions (FAQ) About Cool Mist Humidifiers for Cough

Q: Can I use warm water in a cool mist humidifier?

A: Generally, no. Cool mist humidifiers are designed for room-temperature water. Using warm water might damage the internal parts of the machine.

Q: How often should I clean my cool mist humidifier?

A: You should clean it every one to three days. A quick rinse daily is best. A deep clean with vinegar or a mild cleaner should happen at least once a week.

Q: Will a cool mist humidifier cure my cough?

A: No, it will not cure the underlying cause of the cough. It helps manage the symptoms by adding moisture to the air, making your throat feel less scratchy and helping with congestion.

Q: What is the difference between cool mist and warm mist?

A: Cool mist humidifiers create a cool vapor using ultrasonic vibrations or a fan. Warm mist humidifiers boil water to create steam. Warm mist can feel nicer when you have a chill, but cool mist is safer around children.

Q: Should I use tap water or distilled water?

A: Distilled water is always better. Tap water contains minerals that create white dust and cause buildup inside the machine. Distilled water keeps the mist cleaner.

Q: Can I put Vicks VapoRub directly into the tank?

A: Never put Vicks or other heavy oils directly into the main water tank. This can ruin the machine. Only use oils in designated scent trays if your model has one.

Q: How big of a room can one humidifier cover?

A: Humidifiers are rated for room size (e.g., small bedroom, large room). Check the product specifications to make sure it matches the square footage of the room where you plan to use it most.

Q: Is it okay to leave the humidifier running all night?

A: Yes, if it has an auto shut-off feature for when the water runs low. Running it all night helps keep airways moist while you sleep, which is key for night coughs.

Q: My cool mist humidifier is making a gurgling sound. Is that normal?

A: A little gurgling sound is often normal as the water refills the base chamber. If the sound is very loud or constant, check that the unit is sitting on a flat, level surface.

Q: Does the type of water affect the mist color?

A: Yes. If you use hard tap water, you might see a fine white dust floating in the air or settling on furniture. This dust comes from the minerals in the water.