The Secret Tobacco Companies Don't Want You to Know: There's Radiation Inside CigarettesCasey Chan9/30/11 11:13am283EditPromoteDismissUndismissHideGo to permalinkRat poison. Lighter fluid. Battery acid. Pesticides. And now...radiation. What do they all have in common? They're all rolled into one cancer causing cigarette. What's worse, tobacco companies have known that radiation was inside cigarettes but hid evidence of it for 4 decades.