I believe that the goverment has hidden the facts of how gravity smells like. I have done some extensive reseach only to have the government take it all away from me. I was forced to sign a Non-Disclosure Agreement afterwards. So right now I am not going to comply with the NDA and say gravity smells like magnets.
Gravity smells like plastic flowers, but an object only smells so when it is being dropped.
Gravity smells like victory in the morning, Or a chili cheese dog in the early morning after a long night of drinking, or wet toast left out in the rain for a few hours. I am still doing tests on the subject. Its difficult to define, but it is an attractive smell, and very much weaker than the smells of electromagnetism, and the strong and weak nuclear forces. Gravity has a smell reminiscent of extremely sharp Romano cheese. Italian or related to dairy products.