Montréal-Pierre Elliott Trudeau Airport sees US flight cancellations and delays after varnish odour shuts down customs. Here's the latest update passengers need to know

Flights to the United States were disrupted at Montréal-Pierre Elliott Trudeau International Airport after a varnish odour from interior painting temporarily shut down US Customs operations. Airport officials say customs processing is gradually resuming, but travellers should still expect delays. While the odour may have been unpleasant, it did not pose any health risk, the airport said.

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