What was found
STRANGE ODOR ON FLIGHT DECK AND ENTRYWAY. NOTICE WITH APU ON AND BOTH PACKS RUNNING. RECYCLED PACK 1 AND SMELL RETURNED AFTER TURNED BACK ON. SMELLED LIKE GARBAGE "TRANSFERRED TO NRWC 040-ORD-01246"-C/A-CONDUCTED TROUBLE SHOOTING OF STRANGE ODOUR EVENT IN CABIN & COCKPIT IAW E-175 FIM TASK 21-20-00-810-801-A, PAGE 1,A,(1) THRU TO AND INCLUDING PAGE 4, E BLOCK DIAGRAM 1, BLOCKS 1&6, PAGE 5, BLOCKS 1&2, PAGE 6, BLOCKS 1&2, PAGE 7, BLOCKS 1,2,3&4, PAGE 8, BLOCKS 1&6, PAGE 9, BLOCKS 1&2, PAGE 10, BLOCKS 1&2, PAGE 11, BLOCKS 1&2, PAGE 12, BLOCKS 1&2 AND PAGE 13, BLOCKS 1,2&7. NO ODOURS DETECTED. SUSPECT TRANSITORY COND OF THE AIR CONDITIONING PACKS. A/C SATISFACTORY.