Vaping may be an effective way to quit smoking during pregnancy New Scientist Intrauterine exposure to nicotine through maternal vaping disrupts embryonic lung and skeletal development via the Kcnj2 potassium channel ScienceDirect Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC 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 Smoking during pregnancy March of Dimes