Trained dog worshipping feet and smelling sweat

We have our dog, fonsi, who came home sweaty from the gym. we called him to come take off our sneakers and smell our sweaty socks. he's very obedient and loves to smell. we make him smell our armpits and worship our gorgeous feet, and he gives us a nice massage so we can relax. he's behaving well, and we'll give him a treat. he can smell our butt after the gym, and we'll spit all over his face and mouth.