A WestJet flight going to Houston from Calgary was grounded and a woman aboard a plane was taken to hospital after being exposed to de-icing fluid.
The company says crews were de-icing the aircraft when the fluid got into the air conditioning system and smoke appeared in the cabin.
Emergency Medical Services says they were called to Calgary International Airport around 7:20 a.m. Sunday to treat a woman working on the flight.
EMS spokesman Adam Loria says the woman was taken to hospital in stable, non-life threatening condition.
The Calgary-based airline said another crew member also sought medical attention as a precaution.
WestJet said no passengers were hurt, but they emptied the plane and passengers were rebooked for a flight leaving 2 1/2-hours later.
“A fulsome review is being conducted with our de-ice crews in YYC to learn what happened and to prevent reoccurrence," said spokeswoman Lauren Scott.
"These findings will be shared amongst all of our de-ice crews across our network."