diff --git a/data/json/monsters/fungus.json b/data/json/monsters/fungus.json
index d398ac550bc0b..bd34d04377d9d 100644
--- a/data/json/monsters/fungus.json
+++ b/data/json/monsters/fungus.json
@@ -363,7 +363,7 @@
     "vision_day": 5,
     "vision_night": 5,
     "harvest": "exempt",
-    "emit_fields": [ "emit_fungal_leak" ],
+    "emit_fields": [ [ "emit_fungal_leak", "1 s" ] ],
     "special_attacks": [ [ "SUICIDE", 20 ], [ "scratch", 15 ] ],
     "death_drops": "default_zombie_items",
     "death_function": [ "FUNGALBURST" ],
@@ -397,7 +397,7 @@
     "vision_day": 5,
     "vision_night": 3,
     "harvest": "zombie",
-    "emit_fields": [ "emit_fungal_haze_plume" ],
+    "emit_fields": [ [ "emit_fungal_haze_plume", "1 s" ] ],
     "special_attacks": [ { "type": "bite", "cooldown": 5 }, [ "scratch", 15 ] ],
     "death_function": [ "FUNGUS" ],
     "flags": [ "SEES", "STUMBLES", "WARM", "BASHES", "GROUP_BASH", "POISON", "HARDTOSHOOT", "NO_BREATHE", "PUSH_MON", "FILTHY" ]
diff --git a/data/json/monsters/nether.json b/data/json/monsters/nether.json
index 0cfb6a8c256e2..4aeeccfa0fafe 100644
--- a/data/json/monsters/nether.json
+++ b/data/json/monsters/nether.json
@@ -483,7 +483,7 @@
     "vision_night": 50,
     "harvest": "exempt",
     "special_attacks": [ [ "TINDALOS_TELEPORT", 5 ] ],
-    "emit_fields": [ "emit_tindalos_gas_leak" ],
+    "emit_fields": [ [ "emit_tindalos_gas_leak", "1 s" ] ],
     "path_settings": { "max_dist": 10 },
     "death_function": [ "MELT" ],
     "flags": [
@@ -526,7 +526,7 @@
     "vision_night": 50,
     "harvest": "exempt",
     "special_attacks": [ [ "TINDALOS_TELEPORT", 5 ], [ "DISAPPEAR", 25 ] ],
-    "emit_fields": [ "emit_tindalos_gas_leak" ],
+    "emit_fields": [ [ "emit_tindalos_gas_leak", "1 s" ] ],
     "path_settings": { "max_dist": 10 },
     "death_function": [ "MELT" ],
     "flags": [
diff --git a/data/json/monsters/zed_electric.json b/data/json/monsters/zed_electric.json
index d18d60ce96ae8..34a21f5574b43 100644
--- a/data/json/monsters/zed_electric.json
+++ b/data/json/monsters/zed_electric.json
@@ -120,7 +120,7 @@
     "vision_night": 3,
     "luminance": 16,
     "harvest": "CBM_SUBS",
-    "emit_fields": [ "emit_shock_cloud" ],
+    "emit_fields": [ [ "emit_shock_cloud", "1 s" ] ],
     "special_when_hit": [ "ZAPBACK", 75 ],
     "death_drops": "default_zombie_death_drops",
     "death_function": [ "NORMAL" ],
diff --git a/data/json/monsters/zed_explosive.json b/data/json/monsters/zed_explosive.json
index 11750b3a20aa4..b8367a1ffe8be 100644
--- a/data/json/monsters/zed_explosive.json
+++ b/data/json/monsters/zed_explosive.json
@@ -157,7 +157,7 @@
     "melee_cut": 0,
     "vision_night": 3,
     "harvest": "exempt",
-    "emit_fields": [ "emit_toxic_leak" ],
+    "emit_fields": [ [ "emit_toxic_leak", "1 s" ] ],
     "special_attacks": [ [ "SUICIDE", 20 ], [ "scratch", 15 ] ],
     "death_drops": "default_zombie_items",
     "death_function": [ "GAS" ],
diff --git a/data/json/monsters/zed_misc.json b/data/json/monsters/zed_misc.json
index 67a8f5493cc88..1546b7996728e 100644
--- a/data/json/monsters/zed_misc.json
+++ b/data/json/monsters/zed_misc.json
@@ -1017,7 +1017,7 @@
     "vision_day": 50,
     "vision_night": 3,
     "harvest": "exempt",
-    "emit_fields": [ "emit_smoke_stream" ],
+    "emit_fields": [ [ "emit_smoke_stream", "1 s" ] ],
     "special_attacks": [ { "type": "bite", "cooldown": 5 }, [ "scratch", 15 ] ],
     "death_function": [ "SMOKEBURST" ],
     "flags": [