My dog is a licker too. She licks everyone & anything. Its never bothered me, so I've never told her no. We encourage it cause it makes us happy.

With my old dog he would lick people too. My grandma hated it, she would tell him no, squeal "ewwww" (cus in french) & swat him on the nose with her fingers. She only had to tell him that a few times until he learned that licking her wasn't that much fun. He liked her, so he obeyed her & would just lay his massive head on her lap & stare at her LOL

Other then that, no idea... sorry