Smoking, Vaping, and COVID 19: Risks and Health Tips Temple Health Smoke and Mirrors: The Myth of Healthy Vaping University of Utah Health Secondhand vape plumes could form lung damaging radicals American Chemical Society E cigarette use is linked to higher heart attack risk, especially in former smokers Vaping Impairs Vascular Function, Even Without Nicotine, Study Finds Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN