Suddenly I had this smell of iron in my nose. So I am sure that gravity smells like a hot iron. You can't smell gravity. It moves too fast, it pulls itself in before you can smell it. It's kinda like light, only a little more like anti-photons.
Gravity is the pull among masses.
Thus it does not has any smell. If you really want a sense of how it smells, I would say it smells like the oceans where you see tides caused by the gravity of the moon and sun. That smell that is gravity. Neal Retke I'd have to say that the smell of gravity is somewhat like the scent of tanned lether on a naked girls butt.