I love the smell and taste of bacon, but can't imagine it would be nice to vape. I think someone once tried it, but it didn't work very well. There was a pizza flavored one doing the rounds about three years ago, but it was mainly vaped as a dare, because it was vile. I tend to think that the savory flavors probably belong on a plate, rather than anything else!
That's the one I was thinking of! Never tried it, I don't think I'm that much of a glutton for punishment!