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 Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy In secondhand vape, scientists smell risk American Heart Association Thirdhand Smoke Resource Center Protecting Californians Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times