Cigarette smokers who try to quit often end up vaping and smoking WashU Medicine Vaping vs. smoking: Long term effects, benefits, and risks 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 Does Vaping Cause Secondhand Smoke? Vaping: Clearing the Air Baker Institute Smokers and Vapers May Be at Greater Risk for Covid 19 The New York Times