Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Sometimes when people vape for the first time they can feel quite unwell and, in some cases, they can actually be sick. This is due to the nicotine they're ingesting and is Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking