Parents using e cigs expose kids to dangerous secondhand vapor Futurity Have you ever breathed in secondhand vapor from a vape? What exactly are you inhaling? It turns out it's a lengthy list of chemicals. FULL STORY When someone vapes around others they expose them to 'second hand aerosol'. But what happens to that aerosol then? Does it disappear or is it like cigarette smoke and stays around, sticking to Thirdhand Smoke Resource Center Protecting Californians How Long Does Second Hand Smoke Stay in Your System