Vaping and pregnancy Know the facts Vaping is not harmless Do you know that vaping or E cigarettes are hazardous during pregnancy as it can affect fetal development. If you are pregnant or trying to become pregnant, you should be aware about the Smoking and vaping during pregnancy increase the risk of preterm birth support is available to help you quit. Smoking during pregnancy is the biggest modifiable risk factor for preterm birth. Quitting Now is a great time to quit pregnancy poster Give up for good Australian Government Department of Health, Disability and Ageing