Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Ever puffed a vape around others thinking it's harmless? Think again. Inhaling vapor from e cigarettes exposes you to harmful chemicals, such as formaldehyde. These toxic substances can be passed on to Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at