Does anyone know how long the cycle times are on the prime? I accidentally left the car in ready mode in a closed garage .. I know it turns off after an hour and will run the engine to keep the catalytic converter at temperature.. I know this is a very bad idea, I'm just concerned how much CO was released into the house
The age and loss of capacity of hybrid battery defines how often the engine ran... In your case the engine probably didn't run for very long. Car exhaust has a pretty distinctive smell. How air normally circulates in the garage as relates to your house defines how much you'll smell it. But that's all in the past. I'm sure you already ventilated all the vehicle exhaust out, right?
Welcome Satsuke2; An attached garage that's built to minimum federal standards, should have vents - so exhaust fumes can escape rather than get pushed into the living areas of your house. Unless you keep the door from the garage to the living area propped open.
A family member did that wit their car once, we are very lucky their garage was drafty. I put a CO alarm in our garage right when we bought the place. Since then I added an automatic door closer to the door between the garage and the house. They're required for new-builds in my area but it seemed like a very sensible thing to retrofit.