well, fans are one thing because that's what they are designed to do, but if a CO2 alarm is activated after 1 minute of idling, then either your car is emitting terrible fumes or your CO2 system needs to be checked by the strata because that should never happen.
I guess where I am coming from is i have lived in condos for almost 15 years and never had an issue with a car battery going flat, and there were times when I'd go 4 or 5 weeks without ever starting it. And all you have to do is start the car and run it for a few minutes or even just drive it around the parkade and the battery should be replenished plenty enough.
If you want to monitor your battery health and charging system, you can use an OBD2 scanner. Or one of these guys:
https://www.amazon.ca/INNOVA-3721-Ba...000EVWDU0?th=1