"cancer-causing carcinogens"<p>Oh wow is that what carcinogens are? Who knew!<p>By the way, nicotine may very well be one of those carcinogens the author is claiming e-cigs do not contain.<p><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553893/#!po=0.649351" rel="nofollow">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553893/#!po=0....</a>