A mandatory masking requirement is seen on an intercom system at a condo building in Toronto, Canada, on Aug. 5, 2020. Starting on Wednesday, the City of Toronto required building owners or operators to have a mandatory masking policy in place for enclosed common spaces like lobbies, elevators and laundry rooms. (Photos: Zou Zheng/Xinhua)

A man wearing a face mask walks out of a condo building in Toronto, Canada, on Aug. 5, 2020. Starting on Wednesday, the City of Toronto required building owners or operators to have a mandatory masking policy in place for enclosed common spaces like lobbies, elevators and laundry rooms.

A man wearing a face mask walks to a condo building in Toronto, Canada, on Aug. 5, 2020. Starting on Wednesday, the City of Toronto required building owners or operators to have a mandatory masking policy in place for enclosed common spaces like lobbies, elevators and laundry rooms.

A mandatory masking requirement is seen on the front desk of a condo building in Toronto, Canada, on Aug. 5, 2020. Starting on Wednesday, the City of Toronto required building owners or operators to have a mandatory masking policy in place for enclosed common spaces like lobbies, elevators and laundry rooms.