YES this nose licking thing especially when food is offered, smelled, and turned down is exactly what mine does when it's nausea. Then I know to get the gall bladder, pancreas, kidneys etc checked because all of them are an issue. Diabetes is fine now for 3 years with the no-carb dry food and only low carb wet food.That nose licking is a sign of nausea, along with the rest of her behavior around food. The fact that the vet doesn't acknowledge that is ridiculous. When my cats are nauseous they also do that nose licking thing. If they're nauseous to the point of throwing up, they lick their lips multiple times. Not vomiting doesn't mean a cat isn't nauseous. I hope throwing up isn't the signal your vet is looking for in order to say Missy is nauseous. The info on this page has been very helpful for me in the past for determining why one of my cats was refusing to eat. Turns out, he was indeed nauseous. Nausea & Inappetence in Cats - Raw Feeding for IBD Cats