diff --git a/Resources/Prototypes/Reagents/narcotics.yml b/Resources/Prototypes/Reagents/narcotics.yml
index d05cc29ab0..2e2eee20bb 100644
--- a/Resources/Prototypes/Reagents/narcotics.yml
+++ b/Resources/Prototypes/Reagents/narcotics.yml
@@ -201,6 +201,14 @@
   plantMetabolism:
   - !type:PlantAdjustHealth
     amount: -5
+  metabolisms:
+    Poison:
+      effects:
+      - !type:HealthChange
+        probability: 0.02
+        damage:
+          types:
+            Cellular: 2 #smoking gives you cancer.
 
 # TODO: Replace these nonstandardized effects with generic brain damage
 - type: reagent