As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED EXHAUST SMELL IN CABIN ON TAKEOFF AND CLIMB. MAINTENANCE LOCATED A DISCONNECTED NR 1 ENGINE INTAKE HEATED LIP (EXHAUST DUCT) TUBE. EXHAUST COULD HAVE BEEN INGESTED BY THE ENGINE AND THEN MIXED WITH THE BLEED AIR. NO PART FAILURE WAS OBSERVED.