is tobacco a poison Nicotine Poisoning: Overdose, Symptoms, and Treatment WHO warns that tobacco industry

Massive generation of waste These include the waste produced by smoking (which generates cigarette butts) and the use of new smokeless products

Shen N, et al

For some individuals, especially younger users, signs of dependence may appear even sooner due to heightened sensitivity in the brains reward system

PMC 2327253

It was used to describe one who retained something selfishly, or more specifically, to monopolize or smoke too much of a cannabis cigarette. While the screen legend wasnt known for being a midnight toker, he did have a rather notorious habit of having a cigarette permanently dangling from his lips, which is how the association took root