E Cigarettes Usage Rates Common Ground Health Nearly 2 million U.S. adult nonsmokers vape Did you knowmany people think vaping is less harmful than smoking? While it's true that e cigarette aerosol doesn't include all the contaminants in tobacco smoke, it still isn't safe. Most e cigarettes deliver Some People Are Smoking Both Vapes and Cigarettes, CDC Study Finds Business Insider Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society