Sarin does not work that way; according to weapons expert, Thomas Wictor:
“Sarin released in a warehouse would touch metal and produce hydrogen, which would create a massive fireball and incinerate the nerve agent.”
Must be much more complicated than that...or it would never be useful in occupied or industrialized areas.
Anyone want to prove Victor’s theory that the explosion would burn up the gas by standing by a warehouse of sarin cannisters while it is bombed?