E-cigarettes were designed to help smokers quit, but they’ve turned into a popular habit for many young people. Teens are enticed by the flavours, colours and allure of the product. But a growing number are falling ill with lung-related issues, and in the United States several have died. While no one product or ingredient has been linked to the illnesses, researchers believe they may be narrowing in on the cause. Nevertheless, health officials are asking how safe vaping really is. They want e-cigarettes to be considered as dangerous as smoking.