Dangers smoking

It gose without saying that smoking is a dangerously bad habit.it causes many fatal diseases. It causes cancer, heart attack,chronic bronchitis and some other diseases. One puff of cigarette contains fifteen billion particles of injurious matters. Nicotine is one of them. It prevents the free flow of blood through the veins. This reduces the supply of oxygen in the body. It damages our lungs.It is very essential to ban smoking in public places so that smokers can not do any harm to non smokers.