I'd spray the back with febreze and put it flat in a big plastic bag for a few hours, then just lay it flat to dry. I'm betting the smell is the smell of the stuff it's made of, and no longer than fabric lays on a cutting board that it would not transfer to it. I love your car also.. I have a 1972 VW Beetle that I'm re-doing and a 1964 Meyers Manx.