Second hand smoke poses significant risks not only to adults but also to unborn babies. Eliminating exposure to second hand smoke during pregnancy is essential for the health of both mother and child, as Vape Residue May Harm Unborn Babies' Immune Systems Respiratory Therapy Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Health Effects of Maternal Exposure to Thirdhand Chemical Residue from Vape Aerosols Persist Long After Infancy Thirdhand Smoke Resource Center