There are a lot of things we think we know about those germs all around us, but only some of that stuff is true.
We've got a handy crash course in hygiene fact and fiction for you.
Mental Floss made this entertaining video that somehow still manages to clear up misconceptions about staying clean and germ-free. Scroll down if you want to get right to it.
4. Urine disinfects burns and stings. (1:27)
Ew. Plus, urine is *not* a disinfectant. It's not even sterile, contrary to what some people think.