Bad smell!

Alright guys after looking over what I know and could possibly think of it's time for a post to see if anyone else has had this problem. I have this weird smell every now and then and it's the same distinct smell, mostly from the leather shifter cover and rubber boot. I have checked the transmisson for leaks since having changed the fluid about 2 months ago. I have checked the carpet for smell and being wet and can't find anything. Am I missing something? Are these cars prone to leaking somewhere? Or maybe over looked a fluid leak somewhere? The smell is on and off and usually I notice it here and there after driving for a few minutes. Any suggestions? Please help lol.