When I was a kid, my mom smoked, as did a lot of people her age....anyway, she was outside talking to a friend, when she was stung by a wasp....her friend immediately crushed a cigarette and wet the tobacco and put it on the sting....my mom said it immediately stopped hurting....didn't really believe her until I was stung on the back of the hand....my mom made the poultice (for lack of a better word) out of wet tobacco, and the sting did immediately go away, and I never even knew I had been stung....probably some old grandma's remedy.