Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London Electronic cigarette Wikipedia 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 Do Vapes Have Second Hand Smoke Can You Get Second Hand Smoke from a Vape? Parents using e cigs expose kids to dangerous secondhand vapor Futurity