We learned that 450 types of e-cigarettes are currently on the market, not just in Canada, but also around the world. Types vary and so do manufacturing methods. We were told that cases had been reported of e-cigarettes malfunctioning, where the device had overheated.
If a substance such as propylene glycol becomes overheated, causing its chemical composition to change, does it pose a health risk? I ask the question because Canada currently has no regulatory framework in place. What's more, people do not realize that the quality of the mechanism varies from one e-cigarette to another.