The items, such as laughing gas or whippets, are ending up in the garbage and officials say they are exploding, posing serious risks to workers and equipment.

VANCOUVER — Canisters of nitrous oxide, also known as laughing gas, sold under the guise of whip cream chargers are increasingly showing up at Metro Vancouver waste facilities, and they're causing ...

Nitrous oxide canisters that have shown up at Metro Vancouver waste facilities and are suspected to have caused explosions are shown in this undated handout photo. THE CANADIAN PRESS/Handout - Metro ...

VANCOUVER - Canisters of nitrous oxide, also known as laughing gas, sold under the guise of whip cream chargers are increasingly showing up at Metro Vancouver waste facilities, and they're causing ...

VANCOUVER - Canisters of nitrous oxide, also known as laughing gas, sold under the guise of whip cream chargers are increasingly showing up at Metro Vancouver waste facilities, and they're causing ...