Although puppies put everything the their mouth, adult dogs vary.  Some dog turn up their noses at the thought of a lick, but others are very oral.  If your dog licks you a lot, she’s probably seeking your attention just like a dog that jumps on people. You may think that this lovable, but other people may view this as unacceptable.  Never reward a dog with dog treats for licking you. Instead, get up and walk away if you do not prefer dog licking.  You have to be very strick and not acknowledge this behavior.  Reward your dog when she does well. Before long, she will know what behavior is acceptable and which behavior is not.