Distinguishing dust from mold with this short list:
Where it settles: Dust settles on surfaces, while mold can grow on walls and damp areas.
Odor: Dust is usually odorless, while mold has a musty smell.
Adhesion: Dust easily wipes off, while mold sticks to surfaces.
Location: Dust stays on the surface, mold can grow beneath.
Note: Early mold can resemble dust; consider professional inspection.