how to test for mold in a house 3
https://kilo-wiki.win/index.php/Understanding_Mold_Air_Sampling:_What_It_Reveals_About_Indoor_Air_Quality
To test for mold in your house, start by sniffing around musty areas like basements, bathrooms, or under sinks. Visually inspect dark, damp spots, focusing on corners, behind furniture, and near pipes. You can buy a do-it-yourself mold test kit at a hardware store, which usually involves swabbing surfaces or leaving a petri dish open to collect spores, then sending it to a lab for analysis.