You will die before you produce enough CO2 to detect.
You actually don’t even need to breathe to do this. If you hyperventilate to expel the CO2 from your blood then hold your breath, you will run out of oxygen before you build enough CO2 up to detect.
You will die before you produce enough CO2 to detect.
You actually don’t even need to breathe to do this. If you hyperventilate to expel the CO2 from your blood then hold your breath, you will run out of oxygen before you build enough CO2 up to detect.
https://en.wikipedia.org/wiki/Freediving_blackout