1000ppm decreases human cognitive ability by ~20%. It's hard enough to deal with these problems with the brainpower we have. [1] https://ehp.niehs.nih.gov/doi/

1000ppm decreases human cognitive ability by ~20%. It's hard enough to deal with these problems with the brainpower we have. [1] https://ehp.niehs.nih.gov/doi/10.1289/ehp.1510037 https://ehp.niehs.nih.gov/doi/10.1289/ehp.1510037