As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE SMELL - ENROUTE FROM "DEN" TO "CYS" THE PILOTS REPORTED A BURNING SMELL AFTER OPENING THE BLEEDS AFTER TAKEOFF. MX FOUND A PIECE OF SIDEWALL INSULATION AGAINST THE RECIRCULATION EJECTOR. MX RE-POSITIONED AND SECURED THE INSULATION. MX RAN THE ACFT WITH FULL HEAT. OPS TEST WAS GOOD IAW MM 21-51-03.