Does tobacco smoke contains harmful chemicals?

Yes,tobacco smoke contains many chemicals that are harmful to both smokers and non smokers.Breathing even a little tobacco smoke can be harmful.

Of more than 7000 chemicals in tobacco smoke,at least 250 are known to be harmful,inculding hydrogen cyanide,carbon monoxide and ammonia.

Among the 250 known harmful chemicals in tobacco smoke at least 69 cause cancer.These cancer causing chemicals include the following as mentioned in the picture below: