Working summers when I was in college I worked for Ralston Purina Company. Smoking was forbidden because it could cause explosions. So, a lot of people chewed. Occasionally they would offer me some. It would upset my mother to see me walk out after work chewing.
Sometimes people would cheat and smoke anyway. One time I was in a little restroom off a stair landing. I was sitting on the toilet having a cigarette. I thought I heard someone coming and went to drop the cigarette between my legs into the toilet. Unfortunately, I burned myself.