Yeah, I bought two co2 meters - one for each room - after a hackernews thread about losing cognitive function with rising levels. So I only bought them to impro

Yeah, I bought two co2 meters - one for each room - after a hackernews thread about losing cognitive function with rising levels. So I only bought them to improve work. Really wanted to know how often and long I have to open the windows. Often I closed the doors to sleep as the noise from neighbors woke me up sometimes. Was completely dumbfounded to wake up to >2000 ppm co2 in my bedroom. And my meter doesn't even go much further as anything above 2k is considered "get fresh air now". Now I only close the door to the bathroom and keep everything else open.