Should I Be Concerned About Secondhand Vaping? Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Juul study shows secondhand vaping emissions are less toxic than cigarette smoke HEALTH Does vaping cause secondhand smoke? Doctors explain the side effects: Details below. Breathing in someone else's smoke or vape isn't harmless. Secondhand smoke exposure can affect your lungs, brain, and overall health. Protect your families and yourself. Inhalar el humo o el vapor de