22:55 Nicotine, in fact, is the addictive substance that causes individuals to become addicted to smoking. There is no direct relationship between nicotine and cancers. Instead, the compounds formed during the combustion of cigarettes are the actual carcinogenic substances.
how about engine combustion ? why not ban non smoker from driving? those wanted fresh air must go back to kampong. city air are poluted by factory, plantation burning, and massive cars on the road. Researcher pretend to not aware of this.