What was found
SMELLED SMOKE IN COCKPIT DURING FLT, NO ODOR IN JUMPSEAT AREA, SMOKE DISSIPATED AFTER A FEW MINUTES. ALSO PER CREW NO VISIABLE SMOKE. PER JRH RAN NR 1 AND 2 ENGINES WITH ENGINE PACKS ON, NO NOTICABLE ODOR. RAN COCKPIT TEMP TO FULL HOT, PACK ODOR CLEAN. DID A SNIFFER AND IT WAS NORMAL. INSPECTED BEHIND INSTRUMENT PANELS IN COCKPIT, NO NOTICABLE BURNED WIRES OR ODOR. CHECK E/E BAY INSTRUMENT BOXES AND BEHIND RELAY PANELS. ALL CHECK NORMAL. COULD NOT DETECT EVIDENCE OF SMOKE. CHECKED ALL HYD FLUID & APU FLUID AND ENGINE FLUID. NO LOSS OF FLUID. R & R WATER SEPARATOR COALESCER BAGS, BOTH PACKS (A015) & (B015) IAW MM 21-51-16-3.