Understanding smoking behaviour Many people think vaping is a safer option during pregnancy. But both smoking and vaping can affect a baby's oxygen, growth, and development. Here are some risks every expecting parent should know.. We've updated our vaping during pregnancy resource. Created in partnership with ASH, the Royal College of Midwives and Sands, the infographic has important guidance around vapes and pregnancy. The resource is now Electronic cigarettes and vaping Tommy's Are vapes and nicotine patches safe to use in pregnancy? Tommy's Vaping more effective than patches for pregnant women, study finds Dr Colin Mendelsohn