THUNDER BAY — The source of the bad smell detected across a broad section of the city last week remains unconfirmed. Residents of various neighbourhoods contacted the fire department and Enbridge gas the morning of Jan. 7 to report an unpleasant odour in the air. A spokesperson for the ministry of the environment, conservation and parks says it investigated after a complaint was filed with the Spills Action Centre. “No incidents or spills were reported to the ministry (that were) linked to the odour,” he told Newswatch, adding that the ministry would follow up if it received any new information. The spokesperson also said Thunder Bay Pulp & Paper confirmed it was operating normally at the time the bad smell occurred.