i mean you can pump a shitton through a building's ventilation system but i sure hope if Iran has cooked up a version of that, it works better. "bio-weapon" would be a perfectly orwellian description though, right? developing this thing to try to kill less people in hostage situations-->weapons of mass destruction

e: also you're allowed to use chemical weapons just not against a uniformed legal combatant under the geneva conventions, @ tear gas