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I see low CO2 spaces becoming the next big thing for the privileged classes as CO2 levels rise. Weworks of the future will be advertising this as a definite selling point. Mansions with scrubbers getting it down to 200ppm

Opening a window works fine.

I recall reading once that the health of poorer people was better one or two hundred years ago because poorer people ate cheap food - i.e. vegetables - rather than a meat-heavy diet.

Opening a window only works up until ambient CO2, which will continue to rise. A scrubbed interior atmosphere is already a selling point during fire season in the Bay Area.

Seriously, I’ve always thought people in Sydney compared to France were taller and healthier because they have more oxygen... Not only they are outdoors often, but they also have less stuffy buildings. Classrooms in France are the epitome of “stuffy”, and it’s frequent for me to leave a theater because there is 400 people and the vents are off. The usual reaction is to imply I’m sensitive ;)

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