Smoking refers to the inhalation and exhalation of fumes from burning tobacco in cigars, cigarettes and pipes. Historically, smoking as a practice, was followed by natives of the Western Hemisphere, in various religious rituals and for medicinal purposes also. The history starts from the late 1500s. Later it was introduced tobacco in Europe, in-spite of the opposition from the then rulers. But the novelty and thrill factor won over many a new user. Towards the end of the 19th century cigarettes were higher in demand than the cigars and pipes, which had been popular amongst smokers until then. Today smoking has been converted into a major health problem. About half a million deaths occur per year in United States due to cancer and breathing problem.