@LilaHexe 
I also wasn't aware of that and didn't expect it to be as bad as it apparently is.
“The production of one kilogramme of cocaine releases the same amount of carbon dioxide as when a passenger car drives 2,358 kilometres - i.e. once across Europe.”
Though I wonder how much cocaine it needs for a person to run across Europe xD
Source and more info:
https://www.gpdpd.org/en/drug-policy/drugs-and-the-environment/about-the-life-cycle-assessment-of-illict-drugs-and-why-we-urgently-need-a-green-drug-policy