As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - PUNGENT ODOR SMOKE IN AIRCRAFT ON ENGINE PNEUMATICS AT HIGH ENGINE POWER. LAX - CABIN SMELLED OF OIL AFTER AIR CONDITIONING PUT ON WITH APU FOR AIR SOURCE. APU INOP. COMPLIED WITH MEL 49-A. CONTAMINANTS IN SYSTEM. ACCOMPLISHED PACK BURN OUT.