What happens if someone elses saliva get's on the side of your face?

saliva has tons of germs and diseases in it. Food is left rotting more often then not in the grilles of most people. You now have plaque, plague, and most likely flesh-eating viruses now eating the way through the outer layer of your skin. Washing will only kills 85% of the problem. Prolonged exposure to high heat, like with a hair dryer, should kill the rest.