Is Vape Smoke Bad For Second Hand Evidence Mounts About the Health Impact of Second Hand Vaping Smoking, vaping & pregnancy: in pictures Raising Children Network Frontiers World no tobacco: effects of second hand smoke (SHS) and vapors on the developing and adult brain In the United States, about 8% of all women who are pregnant smoke cigarettes, and another roughly 4% report using electronic cigarettes or vapes. To learn more about the dangers of smoking