Whenever I use the windshield washer with the AC on I get a bad smell, sort of like garlic. I've opened the resevoir and stuck my nose in it and it doesn't smell bad, so I'm thinking it is in the line from the resevoir to the nozzle. Anybody else's truck have this problem? I've thought about draining the system and refilling it, but I haven't gotten around to it. I also wondered if there was something I could put in there that wouldn't harm the paint. Any suggestions.