Is Vape Smoke Bad For Second Hand Evidence Mounts About the Health Impact of Second Hand Vaping Secondhand Smoke Vermont Department of Health Secondhand vape exposure: Risks and side effects Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice According to the American Heart Association, the risks of secondhand smoke from vapes are still being discovered. Learn about the dangers of secondhand smoke from vapes.