I have been looking into the SCUD issue a bit further. From what I have found so far, there is a no official record of SCUD-Bs carrying chem warheads being used.

During the Gulf War under Bush Sr., there were recorded instances of soldiers being affected with symptoms consistent with chem weapons. There were instances reported of soldiers later being told not to report it; nbeing told it was hemmorhoids; and even, in a couple of cases, reportedly dying from symptoms that began. Most of these center around an Iraqi artillery attack that occurred on January 22. I have no way of confirming any of this. However, the anecdotes I have read sound genuine enough.

There is a report that Syria developed a chemical warhead for the SCUD-B.

It should be noted that SCUD missiles have notoriously poor accuracy and using one to deliver a chem or bio warhead would practically guarantee civilian deaths, as there is no way to aim it with any precision.

As far as I know, there is no evidence of Iraq presently possessing any chemical warheads, whether for SCUDS or other delivery systems, except the one Sarin shell that was reported recently. If I understand it correctly that shell was not part of a stockpile of current weapons but was left-over from the Gulf War I era.

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