Toxic Thirdhand Smoke Residue Reaches Many Children Even in Nonsmoking Homes Research Horizons The risks of vaping near babies and children are often underestimated, but they are very real. E cigarette vapour can affect developing lungs, increase the risk of respiratory problems and compromise overall Second hand smoke is highly toxic. Here's what happens when pregnant women and their babies are exposed to second hand smoke. How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center Vaping, Second Hand Smoke, and Kids Medical Associates of Northwest Arkansas