It's every Canadian health official's worst nightmare; on May 1, an Air Canada plane flew from Toronto to Edmonton, and the flight was absolutely jam-packed.

Although every passenger was wearing a face mask in accordance with Air Canada's new policy, the flight was completely full — leaving no room for social distancing.

@AirCanada totally unacceptable! A full flight to YVR ! No social distancing pic.twitter.com/FeuHABV3zI

— kathleen (@sail60) May 1, 2020

Passenger Kathleen Hamilton said that she was "so upset" by the packed flight.

"For four-plus hours people are just sitting there, and it was just horrendous," she said. "All you could think about is am I going to get sick?"

@AirCanada flight from Toronto to Vancouver May 1, absolutely full, no social distancing, whereas WestJet has seat distancing. Unbelievably irresponsible and quite terrifying for your passengers. Don’t know why you bothered enforcing social distancing before we boarded. pic.twitter.com/53j6F9eJgb

— kathleen (@sail60) May 4, 2020

Passenger Lydia Dyck had a similar experience on an Air Canada flight from Toronto to Edmonton on May 4.

"The plane was packed," she told Global News. "There were many middle seats taken and I felt like the whole dynamic was a little bit hectic. I was a little disappointed."

Overall, Air Canada says that traffic levels have decreased — although a recent post from a passenger on May 6 would suggest that isn't the case on certain flights.

Full flight on @AirCanada. I'm guessing it's because the economy has reopened. pic.twitter.com/WjjspZkkd4

— Tangy Lime Dance (@TangyLimeDance) May 6, 2020

Fortunately, Air Canada is implementing new safety measures next week.

The airline will introduce mandatory temperature checks before passengers can board their flight on May 15, as well as automatically blocking the sale of adjacent seats.

Temperature checks will be mandatory for passengers, one of several measures to be introduced through Air Canada CleanCare+ as we enhance personal safety & grooming aboard our aircraft. Adjacent seats will be blocked & care kits handed out to passengers https://t.co/DQNS93fUkL

— Air Canada (@AirCanada) May 4, 2020

Air Canada President Calin Rovinescu says the airline will continue to add to to their policies using "best practices" from around the world in the coming weeks.