diff --git a/code/modules/events/blob.dm b/code/modules/events/blob.dm
index ef5a816d2ff..e58b2a861bd 100644
--- a/code/modules/events/blob.dm
+++ b/code/modules/events/blob.dm
@@ -11,14 +11,20 @@
 	if(!T)
 		return kill()
 	var/list/candidates = pollCandidates("Do you want to play as a blob?", ROLE_BLOB, 1)
-	var/mob/C
-	if(candidates.len)
-		C = pick(candidates)
-		Blob = new /obj/structure/blob/core(T, new_overmind=C.client)
-		for(var/i in 1 to 5)
-			Blob.process()
-	else
+	if(!candidates.len)
 		return kill()
+	var/list/vents = list()
+	for(var/obj/machinery/atmospherics/unary/vent_pump/temp_vent in all_vent_pumps)
+		if(is_station_level(temp_vent.loc.z) && !temp_vent.welded)
+			if(temp_vent.parent.other_atmosmch.len > 50)
+				vents += temp_vent
+	var/obj/vent = pick(vents)
+	var/mob/living/simple_animal/mouse/blobinfected/B = new(vent.loc)
+	var/mob/M = pick(candidates)
+	B.key = M.key
+	to_chat(B, "<span class='userdanger'>You are now a mouse, infected with blob spores. Find somewhere isolated... before you burst and become the blob! Use ventcrawl (alt-click on vents) to move around.</span>")
+	var/image/alert_overlay = image('icons/mob/blob.dmi', "blank_blob")
+	notify_ghosts("Infected Mouse has appeared in [get_area(B)].", source = B, alert_overlay = alert_overlay)
 
 /datum/event/blob/tick()
 	if(!Blob)
diff --git a/code/modules/mob/living/simple_animal/friendly/mouse.dm b/code/modules/mob/living/simple_animal/friendly/mouse.dm
index a7a62c74c0b..079ec7df1d2 100644
--- a/code/modules/mob/living/simple_animal/friendly/mouse.dm
+++ b/code/modules/mob/living/simple_animal/friendly/mouse.dm
@@ -146,3 +146,57 @@
 	response_disarm = "gently pushes aside"
 	response_harm   = "splats"
 	gold_core_spawnable = CHEM_MOB_SPAWN_INVALID
+
+
+/mob/living/simple_animal/mouse/blobinfected
+	maxHealth = 100
+	health = 100
+	atmos_requirements = list("min_oxy" = 0, "max_oxy" = 0, "min_tox" = 0, "max_tox" = 0, "min_co2" = 0, "max_co2" = 0, "min_n2" = 0, "max_n2" = 0)
+	minbodytemp = 0
+	gold_core_spawnable = CHEM_MOB_SPAWN_INVALID
+	var/cycles_alive = 0
+	var/cycles_limit = 30
+	var/has_burst = FALSE
+
+/mob/living/simple_animal/mouse/blobinfected/Life()
+	cycles_alive++
+	var/timeleft = (cycles_limit - cycles_alive) * 2
+	if(ismob(loc)) // if someone ate it, burst immediately
+		burst(FALSE)
+	else if(timeleft < 1) // if timer expired, burst.
+		burst(FALSE)
+	else if(cycles_alive % 2 == 0) // give the mouse/player a countdown reminder every 2 cycles
+		to_chat(src, "<span class='warning'>[timeleft] seconds until you burst, and become a blob...</span>")
+	return ..()
+
+/mob/living/simple_animal/mouse/blobinfected/death(gibbed)
+	burst(gibbed)
+	return ..(gibbed)
+
+/mob/living/simple_animal/mouse/blobinfected/proc/burst(gibbed)
+	if(has_burst)
+		return FALSE
+	var/turf/T = get_turf(src)
+	if(!is_station_level(T.z) || isspaceturf(T))
+		to_chat(src, "<span class='userdanger'>You feel ready to burst, but this isn't an appropriate place!  You must return to the station!</span>")
+		return FALSE
+	has_burst = TRUE
+	var/datum/mind/blobmind = mind
+	var/client/C = client
+	if(istype(blobmind) && istype(C))
+		blobmind.special_role = SPECIAL_ROLE_BLOB
+		var/obj/structure/blob/core/core = new(T, 200, C, 3)
+		if(core.overmind && core.overmind.mind)
+			//core.overmind.mind.name = blob.name
+			core.overmind.mind.special_role = SPECIAL_ROLE_BLOB_OVERMIND
+	else
+		new /obj/structure/blob/core(T) // Ghosts will be prompted to control it.
+	if(ismob(loc)) // in case some taj/etc ate the mouse.
+		var/mob/M = loc
+		M.gib()
+	if(!gibbed)
+		gib()
+
+/mob/living/simple_animal/mouse/blobinfected/get_scooped(mob/living/carbon/grabber)
+	to_chat(grabber, "<span class='warning'>You try to pick up [src], but they slip out of your grasp!</span>")
+	to_chat(src, "<span class='warning'>[src] tries to pick you up, but you wriggle free of their grasp!</span>")
\ No newline at end of file