A lot of CO2 is bad for thinking.

CO2 is just a tip as office or home is toxic environment anyway. Plastic (e.g. carpets), formaldehyde in furniture, air fresheners… add home office and cooking at home (-> small carcinogenic particles)…

If you start reading How not to die by Michael Greger, you find out that dust, soda and sitting - not CO2 - are real killers…

It's similar to how people think sharks and airplanes are the biggest killers - when in reality it is coconuts, mosquitoes, and motorcycles.