Organs are now easier to keep clean for surgery

* They initially rot slower, and won't rot if on the same tile as a freezer

* Having dirty hands when doing internal organ surgery will now contaminate
the internal organs. Wash those hands!

code/modules/surgery/organs_internal.dm

@@ -136,6 +136,7 @@
 		for(var/obj/item/organ/I in affected.internal_organs)
 			if(I && I.damage > 0)
 				if(I.robotic < 2)
+					spread_germs_to_organ(I, user)
 					user.visible_message("[user] starts treating damage to [target]'s [I.name] with [tool_name].", \
 					"You start treating damage to [target]'s [I.name] with [tool_name]." )
 
@@ -236,6 +237,7 @@
 
 		var/obj/item/organ/I = target.internal_organs_by_name[target.op_stage.current_organ]
 		if(I && istype(I))
+			spread_germs_to_organ(I, user)
 			I.status |= ORGAN_CUT_AWAY
 
 	fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
@@ -289,6 +291,7 @@
 		if(target.op_stage.current_organ)
 			var/obj/item/organ/O = target.internal_organs_by_name[target.op_stage.current_organ]
 			if(O && istype(O))
+				spread_germs_to_organ(O, user)
 				O.removed(user)
 			target.op_stage.current_organ = null
 
@@ -369,6 +372,7 @@
 		var/obj/item/organ/O = tool
 		if(istype(O))
 			O.replaced(target,affected)
+			spread_germs_to_organ(O, user)
 
 	fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
 		user.visible_message("\red [user]'s hand slips, damaging \the [tool]!", \
@@ -419,6 +423,7 @@
 		var/obj/item/organ/I = target.internal_organs_by_name[target.op_stage.current_organ]
 		if(I && istype(I))
 			I.status &= ~ORGAN_CUT_AWAY
+			spread_germs_to_organ(I, user)
 
 	fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
 		var/obj/item/organ/external/affected = target.get_organ(target_zone)

code/modules/surgery/surgery.dm

@@ -66,7 +66,7 @@
 /datum/surgery_step/proc/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
 	return null
 
-/proc/spread_germs_to_organ(obj/item/organ/external/E, mob/living/carbon/human/user)
+/proc/spread_germs_to_organ(obj/item/organ/E, mob/living/carbon/human/user)
 	if(!istype(user) || !istype(E)) return
 
 	var/germ_level = user.germ_level