You Need to Clean Your Humidifier More Than You Think Breathing in moist air is nice. Breathing in mildew and microorganisms, not so much.

LPT: Have a humidifier? Make sure to clean it regularly. If you use a humidifier be sure to clean it regularly. Mold builds up relatively fast in them. Take apart everything that gets wet in the machine and scrub them down. submitted by /u/glenninator