diff --git a/code/game/objects/items/stacks/medical.dm b/code/game/objects/items/stacks/medical.dm
index 55ecf49dd8..6b6e9d7d65 100644
--- a/code/game/objects/items/stacks/medical.dm
+++ b/code/game/objects/items/stacks/medical.dm
@@ -28,8 +28,7 @@
 
 /obj/item/stack/medical/attack(mob/living/M, mob/user)
 	. = ..()
-	try_heal(M, user)
-
+	INVOKE_ASYNC(src, .proc/try_heal, M, user)
 
 /obj/item/stack/medical/proc/try_heal(mob/living/M, mob/user, silent = FALSE)
 	if(!M.can_inject(user, TRUE))
diff --git a/code/modules/mining/lavaland/necropolis_chests.dm b/code/modules/mining/lavaland/necropolis_chests.dm
index e01438a905..e03de83e02 100644
--- a/code/modules/mining/lavaland/necropolis_chests.dm
+++ b/code/modules/mining/lavaland/necropolis_chests.dm
@@ -930,6 +930,9 @@
 
 /obj/item/lava_staff/afterattack(atom/target, mob/user, proximity_flag, click_parameters)
 	. = ..()
+	INVOKE_ASYNC(src, .proc/attempt_lava, target, user, proximity_flag, click_parameters)
+
+/obj/item/lava_staff/proc/attempt_lava(atom/target, mob/user, proximity_flag, click_parameters)
 	if(timer > world.time)
 		return
 
diff --git a/code/modules/reagents/reagent_containers/medspray.dm b/code/modules/reagents/reagent_containers/medspray.dm
index 02a3f987bc..40ad167531 100644
--- a/code/modules/reagents/reagent_containers/medspray.dm
+++ b/code/modules/reagents/reagent_containers/medspray.dm
@@ -32,6 +32,9 @@
 	to_chat(user, "<span class='notice'>You will now apply the medspray's contents in [squirt_mode ? "short bursts":"extended sprays"]. You'll now use [amount_per_transfer_from_this] units per use.</span>")
 
 /obj/item/reagent_containers/medspray/attack(mob/living/L, mob/user, def_zone)
+	INVOKE_ASYNC(src, .proc/attempt_spray, L, user, def_zone)		// this is shitcode because the params for attack aren't even right but i'm not in the mood to refactor right now.
+
+/obj/item/reagent_containers/medspray/proc/attempt_spray(mob/living/L, mob/user, def_zone)
 	if(!reagents || !reagents.total_volume)
 		to_chat(user, "<span class='warning'>[src] is empty!</span>")
 		return
diff --git a/code/modules/reagents/reagent_containers/syringes.dm b/code/modules/reagents/reagent_containers/syringes.dm
index ca80d6472c..f42ae668c7 100644
--- a/code/modules/reagents/reagent_containers/syringes.dm
+++ b/code/modules/reagents/reagent_containers/syringes.dm
@@ -53,6 +53,9 @@
 /obj/item/reagent_containers/syringe/attackby(obj/item/I, mob/user, params)
 	return
 
+/obj/item/reagent_containers/syringe/attack()
+	return			// no bludgeoning.
+
 /obj/item/reagent_containers/syringe/afterattack(atom/target, mob/user, proximity)
 	. = ..()
 	INVOKE_ASYNC(src, .proc/attempt_inject, target, user, proximity)