If the inside of a building is so hazy that it's difficult to see, you should probably find the nearest emergency exit.

However, that logic may not always apply to some – especially those in the vaping world where giant clouds of exhaled vapour from an e-cigarette isn't a reason to pull the fire alarm.

Vape enthusiasts turned up to the International Centre in Malton this weekend to celebrate their common interest at Canada's Vape Expo.

The three-day event, which kicked off Friday, featured some 150 vendors showing off the latest in what e-cigarettes have to offer.