[MIRROR] Faltered & Dormant diseases update (#10985)

Co-authored-by: Guti <32563288+TheCaramelion@users.noreply.github.com>
Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/modules/reagents/reagent_containers/syringes.dm

@@ -38,7 +38,6 @@
 	drop_sound = 'sound/items/drop/glass.ogg'
 	pickup_sound = 'sound/items/pickup/glass.ogg'
 
-
 /obj/item/reagent_containers/syringe/Initialize(mapload)
 	. = ..()
 	update_icon()
@@ -496,6 +495,17 @@
 	icon_state = "[rounded_vol]"
 	item_state = "syringe_[rounded_vol]"
 
+/obj/item/reagent_containers/syringe/old
+	name = "old syringe"
+	desc = "An old, broken syringe. Are you sure it's a good idea to pick it up without gloves?"
+	mode = SYRINGE_BROKEN
+
+/obj/item/reagent_containers/syringe/old/Initialize(mapload)
+	. = ..()
+	if(prob(75))
+		var/datum/disease/advance/new_disease = new /datum/disease/advance/random(rand(1, 3), rand(7, 9), 2)
+		src.viruses += new_disease
+
 #undef SYRINGE_DRAW
 #undef SYRINGE_INJECT
 #undef SYRINGE_BROKEN