Is this black mold around my ac vent in the bathroom? : r/MoldlyInteresting

Is Your Bathroom Causing Mould to Grow?

And my landlord won't replace the bathroom fan 😀👍🏻 : r/MoldlyInteresting

Grey puffy substance between hallway and bathroom wall : r/fixit

Is this mold, mildew, or dust located in my air vents? : r/MoldlyInteresting

Is this black mold in my air conditioning vent? : r/Whatisthis

Is this mold on the bathroom countertop? : r/MoldlyInteresting

Is this mold, mildew, or dust located in my air vents? : r/MoldlyInteresting

how bad is this mold on my air vent? : r/Mold

Is this mold? These are the vents in my college dorm room. The university is saying it's just dust but I've never seen dust look like this before. Any help is greatly