Thirdhand Smoke Resource Center Protecting Californians Second hand smoke poses significant risks not only to adults but also to unborn babies. Eliminating exposure to second hand smoke during pregnancy is essential for the health of both mother and child, as Secondhand smoke and aerosol Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice 4.16 Secondhand smoke and pregnancy Tobacco in Australia Does Vaping Cause Secondhand Smoke?