PoolOrNew is ugly, carbon trailing returns, oh my

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

@@ -777,7 +777,6 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/unary/vent_pump,
 		visible_message("<span class='danger'>[src] has successfully extinguished themselves!</span>", \
 			"<span class='notice'>You extinguish yourself.</span>")
 		ExtinguishMob()
-	return
 
 
 /mob/living/carbon/resist_restraints()

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

@@ -54,9 +54,9 @@
 
 	var/list/atmos_requirements = list(
 		"min_oxy" = 16,
-		"max_oxy" = INFINITY,
+		"max_oxy" = 0,
 		"min_nitro" = 0,
-		"max_nitro" = INFINITY,
+		"max_nitro" = 0,
 		"min_tox" = 0,
 		"max_tox" = 0.005,
 		"min_co2" = 0,
@@ -303,7 +303,6 @@
 		if(prob(20)) // Lets give them some chance to know somethings not right though I guess.
 			spawn(0)
 				H.emote("cough")
-		//throw_alert("co2", /obj/screen/alert/too_much_co2) //we're gonna leave this one as a silent killer for now
 	else
 		H.clear_alert("co2")
 		if(atmos_requirements["min_co2"]) //species breathes this gas, so they got their air

code/modules/mob/living/living.dm

@@ -556,18 +556,20 @@
 	for(var/X in grabbed_by)
 		var/obj/item/weapon/grab/G = X
 		resisting++
-		if(G.state == GRAB_PASSIVE)
-			qdel(G)
-		else
-			if(G.state == GRAB_AGGRESSIVE)
-				if(prob(25))
+		switch(G.state)
+			if(GRAB_PASSIVE)
+				qdel(G)
+
+			if(GRAB_AGGRESSIVE)
+				if(prob(60))
 					visible_message("<span class='danger'>[src] has broken free of [G.assailant]'s grip!</span>")
 					qdel(G)
-			else
-				if(G.state == GRAB_NECK)
-					if(prob(5))
-						visible_message("<span class='danger'>[src] has broken free of [G.assailant]'s headlock!</span>")
-						qdel(G)
+
+			if(GRAB_NECK)
+				if(prob(5))
+					visible_message("<span class='danger'>[src] has broken free of [G.assailant]'s headlock!</span>")
+					qdel(G)
+
 	if(resisting)
 		visible_message("<span class='danger'>[src] resists!</span>")
 		return 1