What was found
FLIGHT 3432 - LAS/LAX - PILOT REPORTED DURING CLIMB AND DESCENT A VERY STRONG ODOR WAS EMITTED FROM THE GASPERS AND A/C VENTS. MAINTENANCE INSPECTED THE RECIRCULATION FAN FILTERS AND INSPECTED THE RIGHT AND LEFT ACM OIL LEVELS. GROUND RUNS PERFORMED ON BOTH ACM PACKS AND ALL CHECKS WERE GOOD. NO ABNORMAL ODOR EMITTED DURING THE GROUND RUN CYCLE. THE AIRCRAFT WAS RETURNED TO SERVICE.