If You See This Black Gunk in Your Humidifier, You Need to Clean It ASAP
Briefly

"This gunk is essentially a biological soup fed by both water impurities and airborne contaminants," says Glenn Gault, emphasizing the necessity of regular cleaning for health.
"If you spot tons of black gooey substance in your humidifier, then you'll need to clean it immediately," highlighting the urgency of addressing buildup for optimal function.
Read at Apartment Therapy
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