Fixed Sterilizine not sterilising wounds. Also tweaked spraybottle message visibility

*Sterilizine will now reduce the germ level of all wounds on the mob on
contact, proportional to the quantity sprayed
*Spraybottles will now display the "<Person> sprays <otherperson> with
the <spraybottle>" message when spraying on any mob

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm

@@ -385,6 +385,13 @@
 	for(var/obj/item/I in M.contents)
 		I.was_bloodied = null
 	M.was_bloodied = null
+	if(ishuman(M))
+		var/mob/living/carbon/human/H = M
+		for (var/obj/item/organ/external/E in H.organs)//For each external bodypart
+			for (var/datum/wound/W in E.wounds)//We check each wound on that bodypart
+				W.germ_level -= min(removed*20, W.germ_level)//Clean the wound a bit. Note we only clean wounds on the part, not the part itself.
+				if (W.germ_level <= 0)
+					W.disinfected = 1//The wound becomes disinfected if fully cleaned
 
 /datum/reagent/sterilizine/touch_obj(var/obj/O)
 	O.germ_level -= min(volume*20, O.germ_level)

code/modules/reagents/reagent_containers/spray.dm

@@ -52,7 +52,7 @@
 	return
 
 /obj/item/weapon/reagent_containers/spray/proc/Spray_at(atom/A as mob|obj, mob/user as mob, proximity)
-	if (A.density && proximity)
+	if ((A.density || istype(A, /mob/living)) && proximity)//isHuman check allows the visible message to proc when spraying lying-down people and
 		A.visible_message("[usr] sprays [A] with [src].")
 		reagents.splash(A, amount_per_transfer_from_this)
 	else