They say that cranky old ladies live forever, now apparently stinky old guys do as well. It turns out that a natural by-product of a cellular process that controls blood pressure is hydrogen sulfide—the stuff that makes your farts stink. All that H2S has to get out of your system somehow, and it does… one toot at a time.

So the next time your loved one cuts the cheese under the covers, try to make those watering eyes tears of happiness. After all, they are just showing you how healthy they are. And you want them to be healthy, right?