Teeth marks are not always what we think are salmon teeth, some are brown bomber marks, but find one with tooth marks and an obvious applied scratch on the face, and you may have winner. Don't paint it before trying it out first, clean it up, put a little scent on it, and unless you have the exact same hook, fish it as found.
Another thing you might try with ones that are not fishy. Drop your plug without the hook into a large pot of boiling water for about 20+/- seconds, take it out and dunk it into a large bowl of cold water, the plastic softens, the enclosed air expands, the plastic expands, and when you dunk it in the cold water, the plastic rehardens. If you do it right and the gods favour you, the body will expand , the action will change and you may end up with a good plug.