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 Smoking and Pregnancy FAQs: Essential Answers for Moms to Be Nicotine or marijuana vaping exposure during pregnancy and altered immune responses in offspring Second hand smoke is highly toxic. Here's what happens when pregnant women and their babies are exposed to second hand smoke.