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

It’s in the air. That’s why collectors prefer sealed items because those same items outside of their packaging have been exposed to air and therefore a great level of dust. It’s not noticeable in the short term but over years or decades, whether an old room or a collectable item, dust will travel with anything exposed to air