Sir: I strongly believe that people should not smoke. Smokers should quit smoking as it is injurious to health as it destroys the respiratory system and lungs. It has a great risk of heart-attack. Passive smoking is more dangerous than the smoking. For the sake of others, smoker should always avoid smoking in the public places and never offer cigarettes. Many places are declared as no-smoking areas in Pakistan. We must follow these restrictions. RIDA LIAQUAT Karachi