Heh heh, I can just picture the smell giving your position away... or maybe it would deter people from finding you? "Oh man, do smell that? Smells like shit!"
Seriously though, I found that Coleman's seems to do the job.
G&P M4 Sopmod
G&P Mk18 Mod 0
KSC USP Tactical (System 7)
Tactical Airsoft Combat Operatives