The Killing Eve star paused a matinee performance due to difficulty breathing amidst the Canadian wildfires.

The performance was set to resume from the top with understudy Dani Arlington stepping in for Comer as Tessa.

Reps for Comer didn’t immediately respond to EW’s request for comment.

Jodie Comer in ‘Prima Facie’

Jodie Comer in ‘Prima Facie’.Credit: Bronwen Sharp

TheNational Weather Service issued an air quality alertin the city labeled as “hazardous,” according to ABC.

“We expect this to be a multiple-day event,” emergency management commissioner Zach Iscol told the outlet.

“This is not something that is normal.”

TheWGE East also canceled all picket linesfor Wednesday “out of an abundance of caution.”