Medical Doctors, during the mid-nineteen hundreds, recommended it to their patients for nervousness. Millions of people expose their children to it every day in their homes without ever considering the consequences. This stuff is very tightly woven into the fabric of our society. By now you have probably caught on. Yes, it is nicotine.
Tobacco plants produce one of the most powerful insecticides agriculture has ever known.
The facts above were taken mainly from Michigan State University's, Master Gardener program which I attended in Leelanau County, fall of 1997. Any good reference on pesticides will largely verify this information. If my math is correct, you could extract the nicotine from just four cigars and inject it into a 140-pound person, and that person would likely be dead within hours. The reason a smoker does not die from smoking four cigars is because much of the nicotine goes up in second-hand smoke. In addition the body gradually processes the poison as he smokes.