It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Are vape pens, or e cigarettes, ever the better option? Ohio State Health & Discovery How to Vape Safely in 3 Easy Steps: Beginner Guide Vapes On A Plane Marketing Kit Federal Aviation Administration Vaping Is Far From Harmless NOVA PBS