is smoking really injurious to the health???????????

Yeah smoking do really harm , it differ from person to person , because some people have a more chance to get metaplasia (changeing in cell type from one kind to another) due to smoking effect , so those people who smoke have high chance to get throat cancer , lung cancer and even mouthe cancer, Smoking affect also in your blood PH and make it more acidic so affect your stomach and may develop peptic ulcer. Smoking is make more harm on ladies than men. If child start smoking early in his life , his manifistaions would be seen quickly in life. So you really don't want to smoke ,do you?

pasif smoker more dangerous than the active smoker. this means that if we smoked we have brought misfortune on other person.

hello I have not yet done that But i would like to try it

Yes it is as docs say so and there are many people who suffer lung cancer due to it although not all.But i can surely tell that who donot suffer anything till end if they go for some medical check up they'll see the consequences.