Likely drain fly (moth fly)

Damp indoor areas, especially drains, where larvae develop in organic slime.

Larvae feed on microbes and decomposing organic matter in drain biofilm; adults take little or no food.

Small, fuzzy-winged adults rest on walls near drains and fly in short, weak bursts. Larvae live in wet organic buildup.

Harmless to people and do not bite; large numbers can indicate a dirty or blocked drain.