How does dust get everywhere?

Question

You go into a room that hasn’t had folks in it for 10 years and there is dust everywhere. I thought it was skin cells but obviously not.

Even rooms with no access to the outside have dust.

In: Mathematics

Answer 1

Dust is just… stuff. Tiny little pieces of stuff. Flakes of skin, yeah, but also hair fragments, pollen, wood chips, paint flakes, drywall fragments, loose soil…

Everything is always falling apart at the slightest touch. Air flow causes objects to erode, and then carries that tiny particulate matter around before dropping it somewhere.

Only in a perfectly sealed room can you have no dust build up.