diff --git a/code/modules/reagents/chemistry/reagents/other_reagents.dm b/code/modules/reagents/chemistry/reagents/other_reagents.dm
index aa332bec2487..4873cf7873fd 100644
--- a/code/modules/reagents/chemistry/reagents/other_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/other_reagents.dm
@@ -926,7 +926,7 @@
 	taste_description = "gross metal"
 	glass_icon_state = "dr_gibb_glass"
 	glass_name = "glass of welder fuel"
-	glass_desc = "Unless you're an industrial tool, this is probably not safe for consumption."
+	glass_desc = "Unless you're an industrial tool or a preternis, this is probably not safe for consumption."
 
 /datum/reagent/fuel/reaction_mob(mob/living/M, method=TOUCH, reac_volume)//Splashing people with welding fuel to make them easy to ignite!
 	if(method == TOUCH || method == VAPOR)
@@ -938,7 +938,7 @@
 	M.adjustToxLoss(1, 0)
 	..()
 	return TRUE
-
+	
 /datum/reagent/space_cleaner
 	name = "Space cleaner"
 	description = "A compound used to clean things. Now with 50% more sodium hypochlorite!"
diff --git a/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/organs.dm b/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/organs.dm
index 2206003e834d..a2132c6313a0 100644
--- a/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/organs.dm
+++ b/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/organs.dm
@@ -46,17 +46,7 @@
 	name = "preternis lungs"
 	desc = "An experimental set of lungs.Due to the cybernetic nature of these lungs,they are less resistant to heat and cold but are more efficent at filtering oxygen."
 	icon_state = "lungs-c"
-	safe_oxygen_min = 12
-	safe_toxins_max = 10
 	gas_stimulation_min = 0.1 //fucking filters removing my stimulants
-
-	cold_level_1_threshold = 280
-	cold_level_1_damage = 1.5
-	cold_level_2_threshold = 260
-	cold_level_2_damage = 3
-	cold_level_3_threshold = 200
-	cold_level_3_damage = 4.5
-
 	heat_level_1_threshold = 320
 	heat_level_2_threshold = 400
 	heat_level_3_threshold = 600 //HALP MY LUNGS ARE ON FIRE
diff --git a/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/preternis.dm b/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/preternis.dm
index 78d27cb90238..ec9cfec8f762 100644
--- a/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/preternis.dm
+++ b/yogstation/code/modules/mob/living/carbon/human/species_types/preternis/preternis.dm
@@ -11,18 +11,15 @@ adjust_charge - take a positive or negative value to adjust the charge level
 	default_color = "FFFFFF"
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_PRIDE | MIRROR_MAGIC | RACE_SWAP | ERT_SPAWN | SLIME_EXTRACT
 	inherent_traits = list(TRAIT_NOHUNGER,TRAIT_RADIMMUNE)
+	inherent_biotypes = list(MOB_INORGANIC)
 	species_traits = list(EYECOLOR,HAIR,LIPS)
 	say_mod = "intones"
 	attack_verb = "assault"
 	meat = /obj/item/reagent_containers/food/snacks/meat/slab/synthmeat
 	toxic_food = NONE
-	brutemod = 1.25
-	burnmod = 1.5
 	yogs_draw_robot_hair = TRUE
 	mutanteyes = /obj/item/organ/eyes/preternis
 	mutantlungs = /obj/item/organ/lungs/preternis
-	yogs_virus_infect_chance = 20
-	virus_resistance_boost = 10 //YEOUTCH,good luck getting it out
 	var/charge = PRETERNIS_LEVEL_FULL
 	var/eating_msg_cooldown = FALSE
 	var/emag_lvl = 0
@@ -90,15 +87,17 @@ adjust_charge - take a positive or negative value to adjust the charge level
 			to_chat(H,"<span class='danger'>ALERT! OPTIC SENSORS FAILURE.VISION PROCESSOR COMPROMISED.</span>")
 
 /datum/species/preternis/handle_chemicals(datum/reagent/chem, mob/living/carbon/human/H)
-	. = ..()
+	..()
+	. = FALSE
 
-	if(H.reagents.has_reagent("oil"))
+	if(H.reagents.has_reagent(/datum/reagent/oil))
 		H.adjustFireLoss(-2*REAGENTS_EFFECT_MULTIPLIER,FALSE,FALSE, BODYPART_ANY)
 
-	if(H.reagents.has_reagent("welding_fuel"))
-		H.adjustFireLoss(-1*REAGENTS_EFFECT_MULTIPLIER,FALSE,FALSE, BODYPART_ANY)
+	if(H.reagents.has_reagent(/datum/reagent/fuel))
+		H.adjustBruteLoss(-0.5*REAGENTS_EFFECT_MULTIPLIER,FALSE,FALSE, BODYPART_ANY) //Preternis can have a little bit of brute healing,as a treat.
+		. = TRUE
 
-	if(H.reagents.has_reagent("teslium",10)) //10 u otherwise it wont update and they will remain quikk
+	if(H.reagents.has_reagent(/datum/reagent/teslium,10)) //10 u otherwise it wont update and they will remain quick
 		H.add_movespeed_modifier("preternis_teslium", update=TRUE, priority=101, multiplicative_slowdown=-2, blacklisted_movetypes=(FLYING|FLOATING))
 		if(H.health < 50 && H.health > 0)
 			H.adjustOxyLoss(-1*REAGENTS_EFFECT_MULTIPLIER)
@@ -130,7 +129,7 @@ adjust_charge - take a positive or negative value to adjust the charge level
 		H.reagents.del_reagent(chem.type)
 
 
-	return FALSE
+	return
 
 /datum/species/preternis/spec_fully_heal(mob/living/carbon/human/H)
 	. = ..()
diff --git a/yogstation/code/modules/reagents/chemistry/reagents/other_reagents.dm b/yogstation/code/modules/reagents/chemistry/reagents/other_reagents.dm
index 245e25bbc280..dfcc7eed77d0 100644
--- a/yogstation/code/modules/reagents/chemistry/reagents/other_reagents.dm
+++ b/yogstation/code/modules/reagents/chemistry/reagents/other_reagents.dm
@@ -35,4 +35,4 @@
 		M.adjustOxyLoss(-2, 0)
 		M.adjustToxLoss(-2, 0)
 		. = 1
-	return ..() || .
\ No newline at end of file
+	return ..() || .