Chemical weapons in Fallujah?

Isn’t it odd that although the resistance in Fallujah has allegedly vowed to use chemical weapons against the Americans that we hear none of the hullabaloo over chemical weapons suits or gas masks or anything that we heard before the invasion? Are the assaulting troops in chem gear or not? If not, why not?

Duelfer’s report actually says that chemical weapons under UN seal were looted, so it is within the realm of possibility that the resistance has some.