Quote Originally Posted by anne865 View Post
Hey guys I'm at my boyfriends. I didn't use the toilet or eat anything at home. I keep feeling unwell tho with nerves. I have another question...

After v* and d* how long until particles settle? As I'm thinking they may have been in the air when I walked past the bathroom etc? Or do they land instantly?

Thanks so much everyone for your help.
They settle instantly, the particles are heavier than air and dont have the lipid envelopes to stay airborne. It would be the same as if a water balloon was thrown on the floor, within a few seconds the particles of water would have hit the floor.