Good day, everyone, I have an uncommon question: Man smokes in a balcony. Will the people, who are below him will smell that? Or just people who live above the man? I guess warm air is going up, but how about a smell, diffusion says that molecules are moving disorderly, so I completely lost my mind whether smell can be smelled if you are below. This is some kind a exercise, but I can't recognize which physics field it belongs to. Thank you!