Smoking is bad for your health, donâ€™t let people fooled you saying itâ€™s cool. S t o p s m ok i ng or s t op br ea t h i ng
Why does smoking kill? Tobacco smoke contains more than 4,000 chemicals. Many are known to be harmful substances, including tar, nicotine, carbon monoxide, benzene, formaldehyde and hydrogen cyanide. More than 50 of these chemicals cause cancer.