What was found
SMOKE/SMELL - PILOTS REPORTED THAT BURNING ODOR WAS PRESENT FROM THE CAPTAINS SIDE THAT SMELLED LIKE PLASTIC. NO SMOKE WAS OBSERVED. MX CLEANED GLYCOL FROM WINDOW DRIP TRAY AND INSPECTED THE FUEL PANEL FOR ANY EVIDENCE OF GLYCOL. NONE NOTED. MX RAN THE ACFT WITH ALL DE-ICE ANTI ICE SYSTEMS ON, EFIS SYSTEMS ON, ALL BLEEDS OPEN, TEMP CONTROL IN AUTO AND MANUAL, VENT BLOWERS ON AND NO EVIDENCE OF A SMELL WAS PRESENT. SUSPECTED GLYCOL ENTRY INTO BLEED AIR SYS.