120+ batches deep, I still sniff. I've been known to be a dork at times, though...
I can't say I actively sniff, but I do visit my beers every day when I'm in town. I think the yeast know, like when you read to a plant or play it music. My wife thinks I'm nuts, but I make her check in on them at least a couple of times a week when I'm traveling, so they don't get too lonely.
Of course--those cheap fleece blankets, like the ones the airlines give you on flights...I've got about eight of them for just that purpose.