There are lots of commercial products which help discourage pets from destructively chewing household objects, and from chewing, licking and scratching wounds and bandages.
One "do-it-yourself" strategy is to use a combination of white vinegar and apple cider vinegar, which is then sprayed on objects you want your pet to keep out of its mouth. White vinegar produces the strong deterrent smell, and apple cider vinegar is the bitter taste that's found in most anti-chewing products.