E cigarettes proving to be a danger to teens The Scary Truth About Teen Vaping Adults worry about kids using e cigarettes National Poll on Children's Health Vaping is often seen after smoking, but its not risk free. E cigarettes contain nicotine and other chemicals that can harm your heart and lungs, and may affect brain development in young 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 E Cigarettes: Know the Health Risks Department of Health