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, Why Vaping is Dangerous, Especially for Children with Asthma The National Environmental Education Foundation (NEEF) A new study from The Ohio State University found that vaping during pregnancy, even without nicotine, can change a baby's skull and face shape. Researchers exposed pregnant mice to common vape liquids What are the possible effects of secondhand smoke on infants? HealthyChildren.org