Add a generic proc for changing speech verb when wearking a mask

code/modules/clothing/clothing.dm

@@ -428,6 +428,10 @@ BLIND     // can't see anything
 		var/datum/action/A = X
 		A.UpdateButtonIcon()
 
+// Changes the speech verb when wearing a mask if a value is returned
+/obj/item/clothing/mask/proc/change_speech_verb()
+    return
+
 //Shoes
 /obj/item/clothing/shoes
 	name = "shoes"

code/modules/mob/living/carbon/human/say.dm

@@ -145,6 +145,11 @@
 		if(silent || HAS_TRAIT(src, TRAIT_MUTE))
 			S.message = ""
 
+		if(wear_mask)
+			var/speech_verb_when_masked = wear_mask.change_speech_verb()
+			if(speech_verb_when_masked)
+				verb = speech_verb_when_masked
+
 		if(istype(wear_mask, /obj/item/clothing/mask/horsehead))
 			var/obj/item/clothing/mask/horsehead/hoers = wear_mask
 			if(hoers.voicechange)
@@ -168,11 +173,6 @@
 		if(span)
 			S.message = "<span class='[span]'>[S.message]</span>"
 
-	if(istype(wear_mask, /obj/item/clothing/mask/gas/voice_modulator))
-		var/obj/item/clothing/mask/gas/voice_modulator/VM = wear_mask
-		var/obj/item/voice_changer/changer = VM.voice_modulator
-		if (changer.active)
-			verb = pick("modulates", "drones", "hums", "buzzes")
 
 	return list("verb" = verb)