Well u guys have exactly mentioned what i am mentioning. When someone smokes, they take care that it doesnt get into the faces of their friends. Coz when u try to save ur friend, u unknowingly blow it in such a way that it still goes right into the face of someone behind you or wherever the wind is blowing. Even when someone is smoking alone, the smoke from the cigarette that has blown in the direction of the wind, comes directly in ur face. Dont tell me u carry a 5-6 feet tall chimney to blow out the smoke. Unless its blown that way, u are unknowingly creating harm to others.
As regards the effects of cigarette smoke v/s vehicular pollution.....
Harmful substances and cancer - Air pollution and radon : Cancer Research UK
Air pollution vs tobacco smoke
Living in a city or near a main road is not going to affect your risk of lung cancer much if you already smoke. A large amount of research has shown that tobacco smoke is much more dangerous than air pollution.
Tobacco smoke causes around 85% of lung cancer cases in the UK, making it by far the biggest cause of the disease. Compared to this, air pollution causes only a small proportion of cases. In European non-smokers and ex-smokers, between 5% and 7% of lung cancers may be caused by air pollution.
U cant deny a research finding i guess!
Powerful lungs ?
Yes mate powerful lungs. U understand the difference, when u see someone with Asthma. While talking, i take longer pauses. Climbing stairs/slopes - i try to avoid that as much as possible, even if it means climbing from 1st floor to second. Talking on ur phone while u walk? - well its a dream for me.....once u go thru all this, u realise the difference that makes me coin that term "Powerful lungs"