Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN 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