Um, you mean there are Yorkies out there who give you a
choice as to whether they give you kissies or not? lol....
Jenna is a ninja smoocher. She waits until she is sure I am not expecting it, then she gets her licks in, literally. I have had that tongue get in my mouth and up my nose...almost lost an eye the other day. ^_^
I get scared if she licks my mouth after I've eaten chocolate or put lip balm on, or even just brushed my teeth. I don't want her to ingest anything that might be harmless for me, but toxic to her.

I do wonder about that, "dog's mouth is cleaner than a human's" stuff....not sure how accurate that is.