As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT NOTED STRONG ODOR AND HAZE IN BOTH COCKPIT AND CABIN. ODOR APPEARED TO COME FROM BLEED AIR SYS. COULD NOT ISOLATE ODOR FROM NR 1 OR 2 BLEED SYSTEM. REPLACED DUAL HEAT EXCHANGER. CLEANED AIR DUCTS AND RAN ACFT WITH BOTH BLEEDS ON. NO FURTHER SMELL OR HAZE NOTED. ACFT RETURNED TO SERVICE.