Can mold in humidifier make you sick?
Joseph Russell
Updated on May 08, 2026
Dirty reservoirs and filters in humidifiers can quickly breed bacteria and mold. Dirty humidifiers can especially cause problems for people with asthma and allergies.
What happens if you use a moldy humidifier?
Once mold grows inside of a humidifier, the fan disperses the potentially harmful microorganisms into the air where you and your family members can inhale them and possibly experience respiratory allergies or inflammation of the lungs.Can a dirty humidifier make you cough?
Unclean humidifiers can cause bacterial growth that can promote coughs and colds. Steam vaporizers can get dirty quickly, but they're also among the easiest to clean. Rinse out all the used water between uses.Can a humidifier cause bacterial infection?
CPSC has found that bacteria and fungi often grow in the tanks of portable and console room humidifiers and can be released in the mist. Breathing dirty mist may cause lung problems ranging from flu-like symptoms to serious infection.Can a humidifier give you a fever?
Lung issues, from flu-like symptoms to serious infection, are your main worries, according to the Consumer Product Safety Commission (CPSC). Experts have also identified something they call “humidifier fever,” a form of viral lung inflammation caused by colonized humidifier bacteria.Humidifiers: Can They Make You Sick?
Why is my humidifier making me sick?
But be cautious: Although useful, humidifiers can make you sick if they aren't maintained properly or if humidity levels stay too high. If you use a humidifier, be sure to check the humidity levels and keep your humidifier clean. Dirty humidifiers can breed mold or bacteria.Can a dirty humidifier cause a sinus infection?
When you inhale the air through your nose, the moisture helps decrease irritation, and therefore inflammation, of your nasal passages. The bad news: A humidifier that is not properly maintained can make your allergies and sinusitis worse.Is tap water OK in humidifier?
Typically, your household tap water is going to be perfectly fine for your humidifier. As we mentioned, humidifiers are simple things so they don't really need fancy water. That said, be aware that tap water contains minerals that can possibly affect your humidifier.What can I put in my humidifier to disinfect the air?
White vinegar is a safe, natural antibacterial and antimicrobial solution that can sanitize a humidifier and other appliances. Fill your humidifier's water tank with undiluted white vinegar and let it sit for a half-hour. Rinse out the water tank and let it air dry before you put the humidifier back together.How do you get mold out of a humidifier?
The simplest way to clean mold out of a humidifier is to use 3% Hydrogen Peroxide.
- Pour a mixture of four parts water to one part hydrogen peroxide in the tank of your humidifier.
- Give it a good shake and let it sit for at least half an hour.
- Pour it out and rinse the tank with water.