Puff, puff, pass: How Canada celebrated after legalising recreational marijuana

In this file photo taken on April 20, 2016 A woman waves a flag with a marijuana leef on it next to a group gathered to celebrate National Marijuana Day on Parliament Hill in Ottawa, Canada. - Nearly a century of marijuana prohibition came to an end Wednesday, October 17, 2018, as Canada became the first major Western nation to legalize and regulate its sale and recreational use. The change was praised by pot enthusiasts and investors in a budding industry that has seen pot stocks soar on the Toronto and New York stock exchanges, but sharply questioned by some health professionals and opposition politicians. (Photo by Chris Roussakis / AFP) 

Sample jars of British Columbia-grown cannabis brand Broken Coast are displayed at a party held by supplier Aphria, the day before Canadas legalization of recreational marijuana in Toronto, Ontario, Canada October 16, 2018. REUTERS/Chris Helgren

Customers look at a cannabis menu at the Natural Vibe store after legal recreational marijuana went on sale in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Chrissy Brun displays a cannabis menu for customers at the Natural Vibe store after legal recreational marijuana went on sale in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Customers line up outside the Natural Vibe store after legal recreational marijuana went on sale in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Canopy Growth CEO Bruce Linton takes part in an interview after legal recreational marijuana went on sale at a Tweed retail store in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Cannabis is seen under a magnifying glass after legal recreational marijuana went on sale at a Tweed retail store in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Canopy Growth CEO Bruce Linton hands Ian Power, who is first in line to purchase the first legal recreational marijuana after midnight, his purchases at a Tweed retail store in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

A customer looks at cannabis on display after legal recreational marijuana went on sale at a Tweed retail store in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Canopy Growth CEO Bruce Linton hands Ian Power, who is first in line to purchase the first legal recreational marijuana after midnight, his purchases at a Tweed retail store in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

Canopy Growth CEO Bruce Linton poses for a photo with Ian Power and Nikki Rose, who were first in line to purchase the first legal recreational marijuana after midnight, at a Tweed retail store in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

A customer holding a cannabis product gestures while leaving the Natural Vibe store after legal recreational marijuana went on sale in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

A man looks at a sign outside the Natural Vibe store after legal recreational marijuana went on sale in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie

A sign is pictured outside the Tweed retail store after legal recreational marijuana went on sale in St Johns, Newfoundland and Labrador, Canada October 17, 2018. REUTERS/Chris Wattie