Adding it would fix an error that occurs in the log file when the game loads,
Code you've used in other parts for this pack:

sound_vent_large = decouple
fx_gasBurst_white = 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, decouple

Fixed with e4967d3

sorry, forgot to fix this on in the last update. Will make sure to do so in the next one.