I didn't really want to get licked so I taught Loki "kiss" means touch his nose to my nose, and usually I kiss his nose. All I have to do it get down near enough for him to jump up and he is happy to give me a kiss. He will run from clear across the room. Its so sweet.
We have been working with Sammy on kisses but her breath is stinky and she is a licker so it's kinda gross.