Smoking.

Smoking is the habit of burning something made of tobacco and inhaling its smoke. It is one of the most harmful and dangerous bad habits of man. Man gets addicted to smoking through evil company, out of curiosity or frustration. One puff of cigarette smoke contains fifteen billion particles of different injurious matters like nicotine, methyl alcohol. Carbon monoxide etc. nicotine obstructs the normal flow of blood and reduces the supply of oxygen in the body. Thus the smokers suffer from high blood pressure and heart attack. Benzophyrine and
arsenic cause a fatal disease called cancer. Eighty percent of the lung cancer is caused by smoking. These are fatal diseases. So smoking is akin to committing suicide. In modern society a smoker is disliked by all. Its bad odor is also unbearable. A person who does not smoke but remains with him is also vulnerable to the above deadly diseases.