Makes grey don't take damage from sulphuric acid

greys won't take damage from sacid

code/__defines/chemistry_vr.dm

@@ -1,3 +1,4 @@
 // More for our custom races
 #define IS_CHIMERA 12
-#define IS_SHADEKIN 13
+#define IS_SHADEKIN 13
+#define IS_GREY 14 //ywedit

code/modules/mob/living/carbon/human/species/station/greyYW.dm

@@ -15,6 +15,7 @@
 	brute_mod = 1.25
 	flash_mod = 1.15
 	darksight = 5
+	reagent_tag = IS_GREY
 
 
 

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

@@ -105,7 +105,7 @@
 		strength_mod = 0
 	if(alien == IS_SLIME)
 		strength_mod *= 2 // VOREStation Edit - M.adjustToxLoss(removed)
-	
+
 	M.add_chemical_effect(CE_ALCOHOL, 1)
 	var/effective_dose = dose * strength_mod * (1 + volume/60) //drinking a LOT will make you go down faster
 
@@ -344,10 +344,14 @@
 	var/meltdose = 10 // How much is needed to melt
 
 /datum/reagent/acid/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
+	if(alien == IS_GREY)
+		return
 	if(issmall(M)) removed *= 2
 	M.take_organ_damage(0, removed * power * 2)
 
 /datum/reagent/acid/affect_touch(var/mob/living/carbon/M, var/alien, var/removed) // This is the most interesting
+	if(alien == IS_GREY)
+		return
 	if(ishuman(M))
 		var/mob/living/carbon/human/H = M
 		if(H.head)