Smoking Smoking is defined as the inhalation of fumes resulting from burning leaves of plants, especially tobacco, which is available in several forms, including cigarettes. Tobacco contains several substances, including addictive nicotine, which is also a psychological effect of either stimulating or calming. The Native Americans, the Native Americans, used to smoke tobacco for a long period of time, before exploring the two continents and transferring the culture of smoking by explorers to Europe, and its negative effects were later confirmed to be classified as one of the leading causes of death and disease. A study conducted by the World Health Organization indicates that smoking caused the death of four million people annually in the late nineteenth century, the death of five million people in 2003, and the death of six million people in 2011, and the study expected that the number of deaths due to smoking will r...