Germs spread though The Cough

I was sitting in the library, looking up some books on the computer. I jumped at the sound of "A-choo" and suddenly felt a spritz of some stranger's snot on the back of my arm. This stranger sat down at the computer next to me, minding his own business until he leaned over with bloodshot eyes and a hoarse throat and said, "Do you have a Kleenex?" I didn't and he continued to ask people around him, but no one seemed to have one. "A-choo." Another sneeze interrupted everyone's quiet study atmosphere; I noticed the boy cover his nose desperately thinking of what he could possibly do with…