What was found
PILOT REPORTED AFTER TAKE OFF AND GEAR RETRACTION, A STRANGE ODOR PERCEIVED IN THE FLIGHT DECK. MX PERFORMED AN OPS CHECK OF APU BLEED SYS AND PERFORMED A GVI OF FWD AVIONICS BAY FOR ODOR AND ABNORMALITIES. NO DEFECTS NOTED. AN ASSOCIATED ELECTRONIC BAY EXAUST NR 2 CIRCUIT BREAKER WAS FOUND TRIPPED. AFTER RESET FOUND EXHAUST FAN INOPERATIVE. MAINTENANCE R & R NR 2 EXHAUST FAN WITH OPS CHECK GOOD. ACFT WAS APPROVED FOR RETURN TO SERVICE.