Why does smoke come out of mouth after sneezing?

Usually when you are about to sneeze it is because you either have Allergies to something or other that is around you or because you have a cold or flue and your immune system is reacting to the germs throughout the area that you are in. When you sneeze your immune system is reacting to the germs around you. The snot will come out because your immune system is trying to get the germs out of your body. Therefore water is being released from your respriratory system by sneezing your snot out to get rid of germs.