Composition of electronic cigarette aerosol Wikipedia Is Vaping Better Than Smoking? American Heart Association Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC First hand smoke comes from all combustible tobacco products. This includes Cigarettes, Cigars, Pipes, Hookah, and VAPES. This is the primary source of nicotine addiction. No amount of Second hand smoke is safe and Juul study shows secondhand vaping emissions are less toxic than cigarette smoke First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me