One of the students in the dining hall had a puppy in a bag with her! I suppose he could've been a full-grown tiny dog, but he was brown and fluffy and adorable. I asked if I could say hi to him, and scritched him a bit and got my face licked in return.
When I was done, I went over to the hand sanitizer dispenser, not so much because I thought the dog wasn't clean -- he's probably cleaner than most of the freshmen who eat there -- but so as not to freak out anyone who'd just watched me play with a dog right before heading in to serve myself more food.
Frankly, in a lot of food-service situations, I think it would be more sanitary to let me take a handful of chips, or a roll, or whatever, with my pretty-clean hands, than to let me touch a pair of tongs that will be touched over the next hour by dozens or hundreds more people. At most, if I do have germs on my hands, I'm infecting a tiny group of people by touching an extra chip or two. The tongs? I could infect every one of the people who's coming in after me.
Moral of the story? I'll stick with the puppy licks, thanks.