Iraq has the most extensive petrochemical industry in the Middle East and a wealth of vaccine factories, single-cell protein research labs, medical and veterinary manufacturing centers and water treatment plants.
In effect, you cannot stop Iraq from growing nasty bugs in the basement. You can stop them from putting operational warheads on working missiles and launching them at their neighbors.
Iraq has, in effect, one export of any consequence. That's oil.
If Iraq had succeeded in spray-drying anthrax spores to extend their life and lethality, that would have been among the most important secrets of its wide-ranging weapons program.
The U.N. Security Council ordered Iraq in April 1991 to relinquish all capabilities to make biological, chemical and nuclear weapons as well as long-range missiles.