Recent samples should show MMCI 8 (Man Made Carbon Index) causing climate change.
https://roman-empire.net/places/mount-krakatoa-eruption/
The Krakatoa eruption of 535 ushered in several years of cold “dark age” when grain crops in the Holy Roman Empire failed. It ushered in the first of the plagues which persisted for centuries in Europe. The kill off of Roman grain eaters in the middle east ushered in the migration and takeover by beef-eating Turks from the Steppes. The population void gave us Muhamed’s goat-eating armies and Islam.
Modern CO2 is a non-existent blip.
If there is a massive eruption that causes global cooling with a year or two without a summer, we can totally fix it if we raise the price of fossil fuels