If you don't even own a CO2 meter then you understand nothing about how the atmosphere works. I have a CO2 meter, when I check the outside air for CO2 in the morning, when the temperature is coldest, the CO2 usually reads around 600ppm. When I check CO2 outside in the afternoon, when the temperature is hottest, it usually reads around 300ppm.
CO2 doesn't make it the atmosphere hotter, it makes it colder, this is a measured scientific fact.