As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN ENG ANTI ICE ON WE HAD A SMELL IN THE COCKPIT ON DEPT AND A RRVL REF AMM TASK 05-51-26-800-801-C1. INSPECTED BOTH ENG INLET AND EXHAUST WITH NO ABNORMALITIES NOTED. ENG WASH WAS PERFORMED ON PREVIOUS NIGHT. SMELL DID NOT LAST VERY LONG. FLT ATT'S DID NOT NOTICE ANY SMELL. NO FOOD BEING COOKED AT TIME OF SMELL. AIRCRAFT RETURNED TO SERVICE.