Secondhand smoke and secondhand aerosol Vaping may be causing irreversible harm to children's health, doctors say Vaping The Guardian Protect Babies and Kids from Vaping Risks Secondhand smoke and secondhand aerosol Experts Warn About the Lifetime Effects of Secondhand Smoke in Children CardioSmart American College of Cardiology Passive smoking (secondhand smoke) is extremely harmful to children, especially infants. Because infants breathe faster than adults, they inhale more smoke toxins per minute. This exposes them to dangerous chemicals like nicotine,