Is vaping safer than smoking when you're pregnant? Experts weigh in BabyCenter Vaping while pregnant isn't harmlessstudy uncovers risks to newborn lung health 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 Health Effects of Maternal Exposure to Thirdhand Chemical Residue from Vape Aerosols Persist Long After Infancy Thirdhand Smoke Resource Center