Smelling People??

Have you ever sat next to the smelly guy? Did you ever wonder why nobody tells him that he smells, or why he can't smell himself? Doesn't he notice people getting up and changing seats when he sits down? How can he live his whole life being unaware of a flaw that is readily apparent to a total stranger 10 seconds after they've met?

Well, here's the thing: According to science, we're all the smelly guy. Figuratively, that is.