Smoking is generally legal and permissible with certain restrictions where it molests or harms others. Many federal and local laws and ordinances forbid smoking in public places where second hand smoke is harmful and annoying to others and where smoking poses a fire hazard. These have generally been found to be reasonable limitations of smokers' rights. Tobacco is a poison Use of tobacco products causes cancer and other diseases which lead to sickness, disability, and premature death. This has been established by science beyond a reasonable doubt.
Tobacco is a poisonous drug.
It is generally illegal to sell poison for public consumption. The government tests and approves most foods and drugs before they can be sold in Canada. If a substance is found to be harmful it will not be licensed. Tobacco is the exception to this rule. The use of tobacco has been with us for many centuries.