What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Think it's just harmless water vapor? Think again. The aerosol from vapes isn't safe not for you and not for anyone around you. What's really in secondhand vape aerosol? 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. Health experts say not to 'vape' around children, because the secondhand aerosol (it isn't vapor) from e cigs isn't safe for them Kentucky Health News