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, Safety for Vaping Around Pets Bayside Animal Hospital Bayside Animal Hospital Secondhand Smoke Is a Risk for Pregnant and Breastfeeding Moms The Wellness Coalition Vaping Produces Far Less Second Hand Nicotine Than Smoking Respiratory Therapy E Cigarettes and Pregnancy Maternal Infant Health CDC First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me