As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSING 11K ALT PLANE STARTED MAKING A HISSING SOUND BEHIND ME BUT IN FRONT OF THE MED CREW. PASSING 5K ALT. THE MED CREW STARTED TO SMELL FUMES. ON SHORT FINAL I SMELLED WHAT I WOULD EXPLAIN AS BURNING DE-ICE. NO CASS MESSAGES OR ABNORMAL ENGINE INDICATION WERE OBSERVED. SHUT DOWN ON THE TAXI WAY TO EVACUATE AIRCRAFT. NO FINDINGS TO EXPLAIN THE ODOR. POSSIBLE DE-ICE LIP LEAK