Vape residue may harm unborn babies, mouse study suggests Second hand smoke is highly toxic. Here's what happens when pregnant women and their babies are exposed to second hand smoke. The risks of vaping near babies and children are often underestimated, but they are very real. E cigarette vapour can affect developing lungs, increase the risk of respiratory problems and compromise overall Worse Than Debunking Myths: Understanding Secondhand Exposure To Vape Australia Cigarette Detector For Home