This oilpatch town was overcome by a mysterious odour. Now its residents are asking, what made us sick?

Source: Rob Cribb with The Toronto Star Special to Global News, January 31, 2018 

UNITY, SASK.—It was late evening when the pungent odour began entering people’s homes.

“Overwhelming” one resident called it. “Disgusting,” said another who inhaled the smell wafting through this western Saskatchewan town of 2,500 on Jan. 2.

“It gave me a migraine and nausea and burning eyes and throat,” one local wrote on the community’s Facebook page. Others quickly joined sharing similar symptoms.

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Image Source: Global News