Vaping vs Smoking: Effects and Tips for Protecting Your Lungs Max Hospital Secondhand exposure to vaping can cause serious respiratory issues study The Jerusalem Post Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Sitting somewhere when a cloud of cotton candy vapor washes over you? If you can smell the sweet scent of a vape, that's not a great sign.