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by jjk166 600 days ago
Scrubbing the CO2 from the air has no effect on it. The CO2 that tells you to breathe is not in the air. You exhale the CO2 because you specifically do not want it, you need to get rid of it. Hence the scrubbing.

If there is not enough oxygen in the air to breathe, having more CO2 in the air will not save you.