Ah, smell- the missing sense. I'm often quite jealous of dogs and sharks for their ability to pull molecules out of the air and analyze them by pure instinct. Our sense of smell is like the vague awareness of a light seen through your closed eyelids.
Smell is also our most abstract, and indefined, sense. We usually agree that shit smells bad, for example, but how do you describe a smell? I wish that I could rely for a time only on my sense of smell, so that I could dive headfirst into a world of abstraction.
Furthermore, I generally enjoy the smell of my own honest sweat.