How far does germs from a cough travel? how long are they in the air? will neti pot use after being around someone who coughed help stop getting sick?

1)Infinity 2)No: An experiment was done once where labeled virus was sprayed, like a sneeze or cough, from a spray bottle in the front of a large auditorium.It took less than 20 minutes for them to reach way up in the back of that room. They stayed in the air a long time.Remember, though that the farther they travel the more dillute they become which means the closer you are the more will get sprayed all over you