diff --git a/Resources/Prototypes/Reagents/gases.yml b/Resources/Prototypes/Reagents/gases.yml
index 9fa06f632c..367ffa0894 100644
--- a/Resources/Prototypes/Reagents/gases.yml
+++ b/Resources/Prototypes/Reagents/gases.yml
@@ -135,7 +135,13 @@
         damage:
           types:
             Poison:
-              0.2
+              0.8
+      - !type:Oxygenate # carbon dioxide displaces oxygen from the bloodstream, causing asphyxiation
+        conditions:
+        - !type:OrganType
+          type: Plant
+          shouldHave: false
+        factor: -4
       # Cant be added until I add metabolism effects on reagent removal
       #- !type:AdjustAlert
       #  alertType: CarbonDioxide