Firefighters in Calgary say fake Christmas trees should not go in the fireplace.
Crews were dispatched to a multi-family residential building on Monday afternoon when smoke and heat set off an alarm in a hallway.
They say firefighters arrived to find smoke coming from a fireplace on the third floor.
It turned out the occupant started a fire in the wood-burning fireplace and then fell asleep.
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All the smoke was from an attempt to burn an artificial Christmas tree in the fireplace.
Paramedics assessed one man in his 40s, but he was not taken to hospital.