There was a car idling in the garage that caused one of the co monitors and garage air evacuator to turn on.
The air evacuated from the garage into the air intake of the building.
The board has contacted CCM to schedule work to ensure the air intake turns off when the co monitors are triggered to avoid the exhaust being pulled into the building.
Please check that the vents in you bathroom and kitchen are pulling. This will help to dissipate the exhaust smell.
Also please avoid idling in the garage, north ramp and in the loading zone in front of the building.