Working from home next to my open window feels generally way better then being in the office. Perhaps this is contributing. Still, seems more of a case for WFH rather than against, as article mentions some people have tried to make the case for.

I wonder how many high impact political decisions (eg EU treaties) have been made in rooms like these.

One easy way to fix this for many people's bedrooms or home offices: look at your HVAC system, and there's probably an option to have the fan run all the time, even if the heat or air isn't running. Turn that on, and your home's CO2 levels will drop substantially.

My employer started using CO2 monitors in meeting rooms 15 years ago, it’s really a useful thing to have. As well as the meeting rooms having windows you can open.

As a cyclist, I've heard a similar argument for years about indoor training, and particularly doing difficult indoor intervals beyond FTP.

Topic must be very interesting to have this much discussion on an obviously AI-written article. I couldn’t get past the first few sentences.

Maybe more like a catalyst than a bottleneck when you think about it.

A possible cayalyst for compromised decision-making during crowded meetings :\

The building science community has not buy and large came to the agreement that the CO2 itself is the cause of the cognitive decline. It could be the Canary in the coal mine telling us there is an accumulation of compounds causing the decline.

Why that matters? You need good ventilation regardless, but instead of just thinking of CO2, try to minimize compounds in your air by selecting things for the room that smell less and off-gas less.

Matches my experience. Basement home offices are the worst offenders.

Are there studies which analyze performance Vs artificial CO2?

Natural CO2 in a room probably correlates strongly with other things given off by humans... Farts, water vapour, viruses, etc.

The effect needs to be properly understood before totally redesigning the nations ventilation systems on a possibly wrong premise.