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 Frontiers World no tobacco: effects of second hand smoke (SHS) and vapors on the developing and adult brain How secondhand smoke, thirdhand smoke & vaping affects kids Is Vape Smoke Bad For Second Hand Evidence Mounts About the Health Impact of Second Hand Vaping Vaping and Smoking While Pregnant: Risks, Effects and More Secondhand vape exposure: Risks and side effects