What happens to all the non air stuff like dust, pollen, other particles that we inhale into our lungs, where does it go?

Question

What happens to all the non air stuff like dust, pollen, other particles that we inhale into our lungs, where does it go?

In: 18

Answer 1

Tiny hairs in the lungs move the particles up out of the lungs and it is either then swallowed or coughed up.