--- a/src/character.cpp
+++ b/src/character.cpp
@@ -251,6 +251,7 @@
 static const trait_id trait_THRESH_INSECT( "THRESH_INSECT" );
 static const trait_id trait_THRESH_PLANT( "THRESH_PLANT" );
 static const trait_id trait_THRESH_SPIDER( "THRESH_SPIDER" );
+static const trait_id trait_THRESH_VAMP( "THRESH_VAMP" );
 static const trait_id trait_TOUGH_FEET( "TOUGH_FEET" );
 static const trait_id trait_TRANSPIRATION( "TRANSPIRATION" );
 static const trait_id trait_URSINE_EYE( "URSINE_EYE" );
@@ -4775,7 +4775,7 @@
 
 void Character::update_bodytemp()
 {
-    if( has_trait( trait_DEBUG_NOTEMP ) ) {
+    if( has_trait( trait_DEBUG_NOTEMP ) || has_trait( trait_THRESH_VAMP ) ) {
         temp_cur.fill( BODYTEMP_NORM );
         temp_conv.fill( BODYTEMP_NORM );
         return;
--- a/src/map_field.cpp
+++ b/src/map_field.cpp
@@ -88,6 +88,7 @@
 static const trait_id trait_M_SKIN3( "M_SKIN3" );
 static const trait_id trait_THRESH_MARLOSS( "THRESH_MARLOSS" );
 static const trait_id trait_THRESH_MYCUS( "THRESH_MYCUS" );
+static const trait_id trait_THRESH_VAMP( "THRESH_VAMP" );
 static const trait_id trait_WEB_WALKER( "WEB_WALKER" );
 
 void map::create_burnproducts( const tripoint &p, const item &fuel, const units::mass &burned_mass )
@@ -1395,7 +1396,8 @@
             if( ( cur.get_field_intensity() > 1 || !one_in( 3 ) ) && ( !inside || one_in( 3 ) ) ) {
                 u.add_env_effect( effect_teargas, bp_mouth, 5, 20_seconds );
             }
-            if( cur.get_field_intensity() > 1 && ( !inside || one_in( 3 ) ) ) {
+            if( !( u.has_trait( trait_THRESH_VAMP ) ) && cur.get_field_intensity() > 1 && ( !inside ||
+                    one_in( 3 ) ) ) {
                 u.add_env_effect( effect_blind, bp_eyes, cur.get_field_intensity() * 2, 10_seconds );
             }
         }
@@ -1526,8 +1528,9 @@
             // The gas won't harm you inside a vehicle.
             if( !inside ) {
                 // Full body suits protect you from the effects of the gas.
-                if( !( u.worn_with_flag( flag_GAS_PROOF ) && u.get_env_resist( bodypart_id( "mouth" ) ) >= 15 &&
-                       u.get_env_resist( bodypart_id( "eyes" ) ) >= 15 ) ) {
+                if( !( u.has_trait( trait_THRESH_VAMP ) ) && !( u.worn_with_flag( flag_GAS_PROOF ) &&
+                        u.get_env_resist( bodypart_id( "mouth" ) ) >= 15 &&
+                        u.get_env_resist( bodypart_id( "eyes" ) ) >= 15 ) ) {
                     const int intensity = cur.get_field_intensity();
                     bool inhaled = u.add_env_effect( effect_poison, bp_mouth, 5, intensity * 1_minutes );
                     if( u.has_trait( trait_THRESH_MYCUS ) || u.has_trait( trait_THRESH_MARLOSS ) ||
--- a/src/suffer.cpp
+++ b/src/suffer.cpp
@@ -118,6 +118,8 @@
 static const trait_id trait_FRESHWATEROSMOSIS( "FRESHWATEROSMOSIS" );
 static const trait_id trait_GILLS( "GILLS" );
 static const trait_id trait_GILLS_CEPH( "GILLS_CEPH" );
+static const trait_id trait_THRESH_GYNOID( "THRESH_GYNOID" );
+static const trait_id trait_THRESH_VAMP( "THRESH_VAMP" );
 static const trait_id trait_JITTERY( "JITTERY" );
 static const trait_id trait_KILLER( "KILLER" );
 static const trait_id trait_LEAVES( "LEAVES" );
@@ -245,7 +247,8 @@
 
 void Character::suffer_while_underwater()
 {
-    if( !has_trait( trait_GILLS ) && !has_trait( trait_GILLS_CEPH ) ) {
+    if( !has_trait( trait_GILLS ) && !has_trait( trait_GILLS_CEPH ) &&
+        !has_trait( trait_THRESH_GYNOID ) && !has_trait( trait_THRESH_VAMP ) ) {
         oxygen--;
     }
     if( oxygen < 12 && worn_with_flag( "REBREATHER" ) ) {
--- a/data/json/field_type.json
+++ b/data/json/field_type.json
@@ -303,7 +303,7 @@
     "dirty_transparency_cache": true,
     "percent_spread": 10,
     "outdoor_age_speedup": "0 turns",
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 7 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 7 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "2 minutes",
     "phase": "gas",
@@ -389,7 +389,7 @@
     "outdoor_age_speedup": "3 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "10 minutes",
     "phase": "gas",
@@ -418,7 +418,7 @@
     "outdoor_age_speedup": "0 turns",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ], [ "EYES", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "5 minutes",
     "phase": "gas",
@@ -464,7 +464,7 @@
     "wandering_field": "fd_toxic_gas",
     "gas_absorption_factor": 15,
     "dirty_transparency_cache": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "phase": "gas",
     "display_items": false,
     "display_field": true,
@@ -956,7 +956,7 @@
     "outdoor_age_speedup": "5 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "50 minutes",
     "phase": "gas",
@@ -978,7 +978,7 @@
     "outdoor_age_speedup": "1 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "15 minutes",
     "phase": "gas",
@@ -1233,7 +1233,7 @@
     "outdoor_age_speedup": "3 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "10 minutes",
     "phase": "gas"
@@ -1253,7 +1253,7 @@
     "outdoor_age_speedup": "1 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "30 minutes",
     "phase": "gas",
@@ -1275,7 +1275,7 @@
     "outdoor_age_speedup": "1 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "MOUTH", 15 ] ], "traits": [ "THRESH_VAMP" ] },
     "priority": 8,
     "half_life": "30 minutes",
     "phase": "gas",
--- a/data/json/mutations/mutation_ordering.json
+++ b/data/json/mutations/mutation_ordering.json
@@ -73,6 +73,7 @@
           "TROGLO2",
           "TROGLO3",
           "URSINE_FUR",
+          "VAMPSKIN",
           "VISCOUS"
         ],
         "order": 1500