Re-adds passive nicotine comment

Thanks for eating my comment, git.

code/game/objects/items/weapons/cigs_lighters.dm

@@ -202,6 +202,7 @@ CIGARETTE PACKETS ARE IN FANCY.DM
 			reagents.remove_any(REAGENTS_METABOLISM)
 
 	if(has_nicotine && iscarbon(loc) && (src == loc:wear_mask) && !smoker_is_synthetic)
+		// If the cigarette has nicotine, make sure the smoker is getting a bit, even if it's not in the reagents
 		var/mob/living/carbon/C = loc
 		if (!C.reagents.has_reagent("nicotine"))
 			C.reagents.add_reagent("nicotine", 0.1)