And the problem is it s a carcinogen.

And the problem is it's a carcinogen.

May none of your non cancer cells become endangered species.

You've probably heard of benzene rings they're very carcinogenic.

There are more than 45 known or suspected chemical carcinogens in cigarette smoke.

And because these materials are so prolific, because they're found in so many places, there's one other place you'll find this material, styrene, which is made from benzene, a known carcinogen.