I used to do that all the time when I was younger. Then one day I suddenly became nauseous from the smell of raw blueberry muffin mix and I can't lick the beaters/spoon or bowl for anything anymore (except mashed potatoes, but that's different). And no, the eggs weren't bad or anything in that batch of muffin mix, I don't know why I got sick, but now when I bake I have to try to avoid smelling whatever I'm making.