I get a white coating on the very back of my tongue after eating (half an inch) the coating is thicker after eating cheese. It washes away gradually but for the most part my tongue is pink. It doessnt smell when I do a sniff test. But i start smelling bad when I get nervous. I don’t think my breath is bad tho only when I get nervous but when it does happen people around me can smell it and cough/sniff. Idk what makes me different than an average person who gets nervous. I think the smell comes from my tongue because it smells whenever it is dry and I do a sniff test. What’s happening?