- Sneezing is your nose’s way of ousting irritating invaders—like pepper, dust, germs, and even itty-bitty bugs. It’s just one of many built-in defense systems that protects your delicate insides and keeps you healthy. Your body’s other dutiful defenders include earwax, vomit, boogers, and spit.
Looking for more Gross and Goofy Body facts? Check out my book Germ Wars: The Secrets of Fighting Invaders. It’s full of weird, wacky, strange, and surprising information about your body and the bodies of other animals.