EE WAS LOADING PALLETS OF PACKAGED BENTONITE, VIAL FORKLIFT, INTO A TRUCK VAN WHEN HE BEGAN TO COMPLAIN OF AN IRRITANT ODOR WHICH MADE HIS HEAD ITCH AND UNABLE TO FOCUS HIS EYES. AFTER LOADING 3 PALLETS, A FELLOW EE RELIEVED HIM AND LOADED 2 PALLETS. HE STATED HE FELT BETTER AND FINISHED LOADING THE REMAINING 6 PALLETS. APPROX. 5 MIN. LATER, HE FELT DIZZY & LIGHTHEADED. EES ASSISTE