What if switching to vaping limited the health risks? Is it a good idea to vape during pregnancy or when you have asthma? In collaboration with CAMH (@camhnews), this is our third Electronic cigarettes and vaping Tommy's E cigarettes help pregnant smokers quit without risks to pregnancy, trial finds Any form of smoking is not allowed during pregnancy, and this includes electronic cigarettes, which can cause harm to both the mother and the baby. It can affect the baby's growth and E cigarette use during pregnancy and its association with adverse birth outcomes in the US ScienceDirect