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 Avoid Impairment Safe Sleep Academy Vaping doesn't harm pregnant women or babies: shocking study Does Vaping Cause Secondhand Smoke? Exposure to Thirdhand Smoke Harms the Health of Pregnant Women Thirdhand Smoke Resource Center