Car air freshener. Now =there's= a good idea! I frequently wave a patch wetted with it around to really get the smell wafting around. Way, way back I had a girlfriend who liked the smell. Too bad we had other problems.
That brings up a story. About a month ago I was driving back from a range session where I'd been breaking in a new rifle. I got picked up for speeding. The cop audibly sniffed and said. "Did you just clean your gun?" Can't mistake the good ol' Hoppe's smell.