Tobacco smoking
Burning tobacco and inhaling the smoke
Tobacco smoking is the practice of burning tobacco and the absorption of the resulting smoke into one's body. The smoke may be inhaled, as is done with cigarettes, or released from the mouth, as is done with pipes and cigars. The practice is believed to have begun as early as 5000–3000 BC in Mesoamerica and South America.
From Wikipedia, under CC BY-SA. More on occurri.