Gravity smells like Gravity. Gravity probably smells like whatever brings you down.
Gravity smells like lemons.
This really is not a question that can be answered in a simple, witty, one-liner. To fully understand this question, one mst be familiar with the laws of gravity and such physics. I believe that, setting up a webpage, or reading the comments on it, such as this, one would be familiar with that, so I will not go on long-windedly about these, as it would be redundant. I shall go over a few points, though. Gravity, the force that holds, pulls us toward the center of the earth, thus keeping us from flying off of this third rock from the sun.