I had a somewhat similar experience. However, before living in an area with clean air in a house, I previously lived in apartments and was well aware that the C

I had a somewhat similar experience. However, before living in an area with clean air in a house, I previously lived in apartments and was well aware that the CO2 (and PM2.5) levels were unideally high. I feel like the author should maybe ask a medical professional about anxiety, unless they're just being a bit melodramatic.