Of course not.
I have to tell this one story, though. These two people came in here once, a couple. They came in to sell us something, and my boss knew they were coming, but they were a little early, so I had them wait while she finished up something else. So 5 or so minutes go by, and they are talking, and then they turn to each other and smooch. Bwuh? It’s not like one of them was leaving or anything. They just randomly decided to stop everything and go KISS! And then a few minutes later, did it again.
I thought that was a little inappropriate. They were five feet from my desk, and it was just weird. I have no problem with “goodbye” kisses but generally I prefer that if you are over the age of twenty you refrain from kisses every five minutes.