2 ms·

Have a meter going and look at it. I’d describe it as a feeling in my lungs as i breathe I can start to feel above 800ppm. The air feels heavy maybe? I think s

Have a meter going and look at it. I’d describe it as a feeling in my lungs as i breathe I can start to feel above 800ppm. The air feels heavy maybe? I think some people are more sensitive to it than others.

OJFord 4y ago
Have you tested yourself by concentrating on your breathing a bit and then guessing the level before you look at it? I'm not disbelieving, just curious.