His favorite thing to chew on is ME!
He likes to nibble me all over, it's his way of giving kisses.
I use the Merricks Wishbones. They are the least smelliest of the treats I've encountered. They do have a smell but you have to hold it up to your nose to detect it. I also bought flossies, which also don't have an overpowering odor, but they are slightly stronger than the wishbones.