Can I be Affected by Secondhand Vape Smoke? Secondhand smoke from vaping could be harmful to children: study ABC13 Houston Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Parents using e cigs expose kids to dangerous secondhand vapor Futurity Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems. 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