Quote from Jerry in The Smelly Car
[stand-up:] Jerry: Why do we need B.O.? What is the function of it? Everything in nature has a reason, has a purpose, except B.O. Doesn't make any sense. Do something good: hard work, exercise; smell very bad. This is the way the human being is designed. You move, you stink. Why can't our bodies help us? Why can't sweat smell good? It'd be a different world, wouldn't it? Instead of putting your laundry in the hamper, you put it in a vase. You go down to the drugstore and pick up some odorant and perspirant. You probably have a dirty sweat sock hanging from the rear-view mirror of your car. And then on a really special night, maybe a little underwear coming out of your breast pocket. Just to let her know she's important.