I'm far, far more worried about the chemicals being sprayed over and onto everything (and I DO mean everything since these chemicals are SPRAYED from airplanes so it misses nothing down below). 

Don't even worry your little head about CO2.  People who claim it's dangerous either have a benefactor somewhere who's telling them what to say (such as stupidass AOC) or they're just plain stupid to begin with and too lazy to look up facts. I've been checking on this for a long time now, but this article will easily help you to understand the NON-DANGERS of CO2.

https://www.americanthinker.com/articles/2019/11/what_the_university_of_alabamas_football_stadium_tells_us_about_co2.html