That is precisely why regulations are needed. Licensed stores with staff who are very familiar with the products should be allowed to sell e-cigarettes. Health Canada should conduct a check to confirm that the store is selling high-quality products that work properly.
People are so afraid of propylene glycol, but when they go to a rock concert, the smoke surrounding the guitar player or singer on stage is actually propylene glycol.
Propylene glycol attracts humidity. If you were to smoke an e-cigarette in the Sahara Desert, it would not produce any vapour because of the lack of humidity. E-cigarettes need humidity and attract water molecules. That is why the vapour never travels very far and falls just a few feet from the vaping device.