diff --git a/code/modules/surgery/organs/lungs.dm b/code/modules/surgery/organs/lungs.dm
index 2b212bd224..cbb46242c3 100644
--- a/code/modules/surgery/organs/lungs.dm
+++ b/code/modules/surgery/organs/lungs.dm
@@ -248,7 +248,7 @@
 	for(var/gas in breath.get_gases())
 		if(gas in breath_reagents)
 			var/datum/reagent/R = breath_reagents[gas]
-			H.reagents.add_reagent(R, PP(breath,gas))
+			H.reagents.add_reagent(R, breath.get_moles(gas) * initial(R.molarity))
 			mole_adjustments[gas] = (gas in mole_adjustments) ? mole_adjustments[gas] - breath.get_moles(gas) : -breath.get_moles(gas)
 
 	for(var/gas in mole_adjustments)