this would be highly unlikely. first don't use someone else'sbath towel and you won't have to worry. remember what they wipe first and wipe last! if you are talking about a hand towel then sometimes it is best to shake dry rather than use someone's wet towel. stds are almost always transmitted the ol' fashioned way: by sexual activity. as long as you are very careful and diligent in safe-sex practices you should avoid any std.
can you receive an std through a bathroom towel