What was found
UNIDENTIFIABLE ODOR NOTICED ON CLIMB OUT, WENT AWAY DURING CLIMB OUT OF CLOUDS. CAME BACK AT CRUISE. ODOR WORSE UP FRONT (FWD GALLEY / COCKPIT). ODOR HAD A TASTE. NO SMOKE WAS NOTICED. ODOR COULD NOT BE DESCRIBED. TSM 21-00-00-810-820A UNSATISFACTORY CABIN AIR QUALITY REFERS TO SIL 1-132 INSPECTION OF APU DE-ICING FLUID TABLE 4. FOUND ODOR TO REOCCUR WHEN SELECTING APU BLEED WITH PACKS ON. CLEANED APU INLET AND RAN PACKS REF AMM 21-61-00-710-001A.