[LambSlave]

Good points. I am familiar with Bentonite, but despite it's ineffectiveness in this application it WAS reportedly part of the Iraqi weapons program-- even though this was probably incorrect as you point out, I'd wager that this was still the reason for the interest in screening for this compound.

[piasa]

Microbulbs/fumed silica like Cab-o-sil or Aerosil- It wouldn't take a genius to figure out how useful material of this nature would be to disperse a bioweapon.

Iraq purchased a lot of Cab-o-sil.