No idea about the quality of this research, but if true 1350 +- 350ppmv carbon dioxide concentrations is, at minimum..., unpleasent air. I start opening windo

No idea about the quality of this research, but if true 1350 +- 350ppmv carbon dioxide concentrations is, at minimum..., unpleasent air. I start opening windows at ~800. https://journals.sagepub.com/doi/abs/10.1177/1420326X18793997 https://journals.sagepub.com/doi/abs/10.1177/1420326X1879399...