What was found
SMOKE IN COCKPIT / CABIN: IRRITATING CHEMICAL/OIL LIKE ODOR FROM WEMAC AIR OUTLETS JUST AFTER TAKEOFF AT HIGH ENGINE POWER SETTINGS SUCH AS T/O AND CLB POWER. APU IS DEFERRED. RETURNED TO FIELD. COMPLIED WITH ENVIRONMENTAL CONTROL SYSTEM BLEED AND TRIM AIR DUCT BURN PROCEDURE PER TC-5XL-21·120902MR1 DATED 02/24/2020. ACCOMPUSHED HIGH POWER RUN AND RAN ANTI ICE AS REQUESTED. VERIFIED NO ODORS ARE COMING THRU THE AIR VENTS. WORK ACCOMPLISHED PER CE560XL M/M 21-50-00 AND 30-11-00,