The Soviets desperately warned SH about the coming barrage. Thankfully, he did not listen. I remember reading articles in the Desert Shield phase about the mighty Iraqi armed services. The articles indicated that SH would badly bloody our forces perhaps leading to a protacted struggle.
They might have if the initial coalition ground advance bogged down. Then chemical weapons might have been employed against relatively static forces. The best protection was to keep the fighting highly mobile.
There were reports that the USAF was running low on precision munitions. Had the cease-fire not happened when it did, things might have gotten a whole lot bloodier for the Iraqis.
I remember seeing a reired colonel on one of the evening newscasts predicting 30,000 American casualties on day one.