Wonder what the effects would be like in a coworking space/open office environment? Would the levels of CO2 be higher in the likes of a WeWork than a typical of

Wonder what the effects would be like in a coworking space/open office environment? Would the levels of CO2 be higher in the likes of a WeWork than a typical office setup? I remember coming across one similar setup where about 30 startups were working from a basement with pretty much no windows. Then again, wonder what it'd be like in the average subway train or something. Even with decent ventilation systems it feels like the issue would be worse in a packed train/station during rush hour, though the effects would be limited due to no one actually doing any work there.