My dog is generally a good dog and he is too short to sniff most crotches
But He did have some bad habits when I first got him

i.e. He liked to watch me go potty and then would try to lick my stuff and I would have to push him away
He finally stopped trying to lick me (Hurray!!!) and doesn't watch me as often now
When he does watch me he stays just at the door and licks his chops