That would be frustrating as hell. Just don't let them check it in.
https://www.businessinsider.com/air-...aiports-2022-7
An Air Canada passenger who recently lost luggage said she deliberately packed a carry-on bag to avoid the travel disruption consuming the airline industry, but was later made to check the bag which was then misplaced.
Emily Maitino — who travelled with her partner from LAX to Barcelona via Air Canada on June 29 — told Insider that she was made to check the bag in in LA after being told there was no more room for carry-ons.
She later realised the bag was missing after waiting at the luggage carousel in Barcelona for two hours.