I agree that carbon dioxide exposure is dangerous, but it is probably less dangerous because (TIL) there's a specific brain mechanism that wakes you up when you

I agree that carbon dioxide exposure is dangerous, but it is probably less dangerous because (TIL) there's a specific brain mechanism that wakes you up when your blood has elevated CO2[0]. On the other hand, carbon monoxide poisoning will only wake you up if its symptoms (among which headache, nausea/vomiting, elevated heart rate, and cardiac arrest seem likely) do so. [0] https://medicine.uiowa.edu/content/specific-neurons-trigger-waking-due-inhaled-co2 https://medicine.uiowa.edu/content/specific-neurons-trigger-...