Dual Canadian citizens

If you carry two passports, one being Canadian, you should read this:

Dual Canadian citizens can no longer travel to or transit through Canada by air✈️ with a non-Canadian passport. You need a valid Canadian passport to board your flight.

If your country or territory needs you to enter and exit that country or territory using a passport issued by its government, you will still need a valid Canadian passport to board your flight to Canada. Make sure to carry both passports when you travel. Find out more about why you must travel with a valid Canadian passport when travelling by air.

https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada/dual-canadian-citizens-visit-canada.html