I’ve lived in many apartments, and the vents just scatter air randomly i.e. they don't suck air and vent it outside. So getting proper ventilation isn’t really feasible unless you’re willing to open the window every time.

Right, but gas vs not gas remains irrelevant. You're poisoning yourself w/ cooking in those apartments.

The only fix is proper ventilation. Which is unfortunate, because as you note many apartments and homes are not built for it... even in new construction.

Which might be a useful action point for regulatory intervention, rather than something which is much more performative than useful.