Keep in mind that Iran attacked Iraq with gas during their war, and Iraq borders Iran and they remain hostile. Because of this gas masks and decontamination gear would necessarily be standard equipment for Iraq’s military. When you read about discoveries of Iraqi gas masks, decontamination facilities and other precautions it does not necessarily follow that Iraq was preparing to use gas.
I am not saying that Iraq did or did not have these weapons, I am pointing out that discoveries of chemical weapons gear does not necessarily mean they had or were going to use these weapons. Our forces also had gas masks and protective gear.