Vape residue may harm unborn babies, mouse study suggests Vaping during Pregnancy: Not Just a Bunch of Smoke MotherToBaby Is Vape Smoke Bad For Second Hand Evidence Mounts About the Health Impact of Second Hand Vaping Second Hand Smoke and Pregnancy American Pregnancy Association 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 Vaping and Smoking While Pregnant: Risks, Effects and More