Thirdhand Vapor from E cigarettes Damages the Lungs of Mice Thirdhand Smoke Resource Center E cigarette vapour contains two cancer causing chemicals, study says 70 of the 7 Thousand Chemicals in That Smoke Cause Cancer Yeditepe niversitesi Hastanesi Vaping and the use of e cigarettes are likely to cause cancer, according to a new study published by the University of New South Wales on 30 March. The study, which brought together