How heavy are breath droplets? do they fall to the ground immediately? do they float around like feathers? or suspended in the air? or...?

Breath mist: Droplets of breath are quite small but can vary in size. If you've ever had to shout loudly such as at a wedding or ceremony, you'll notice some big drops of saliva fly out and quickly hit the floor or whoever's in the front row. Most droplets are very small, much like cloud vapor. When you're in the cold u can actually see this. Some droplets can stay suspended for several hours assuming no draft