Slide Seal Conditioner that doesn't "stink"

Well I never had an RV with slide outs. Now I do. I mentioned to my lovely wife that I need to treat the slide seals. The response I received was along the line of "oh, well don't put something on that stinks"..... Now I have a small hobby machine shop and DW stays out of it because it stinks. So this is a clue. I have been looking at 3 (so far) slide seal conditioners. 3 in 1, Thetford, and 303. Now the Thetford had one review that said it "stinks" however I saw a can at the RV dealer and sprayed a little of the foam on the counter and took no exception. I know I can ask but then I would possibly end up with 3 or 4 perfectly fine conditioners that didn't pass the smell test. So if someone has been through this please let me know what you use. I'm only need a starting point. I was very hesitant about posting this but hey the only stupid question is the one that isn't asked.??