What was found
ON CLIMBOUT MDI SMOKE MD2 SMOKE MD 1 LOOP A & B MD2 LOOP A & B AFT LOOP A, ALL ILLUMINATED MWP SMOKE & LOOP LITE SMELL OF STRONG SMOKE COMING FROM CARGO COMPT. ENGINEER INVESTIGATED COULD NOT SEE SMOKE BUT ODOR REAL STRONG. AIR TURNBACK. REMOVED ALL FREIGHT AND INSPECTED FOR SMOKE AND FIRE. INSPECTED MAIN DECK FOR SMOKE OR FIRE DAMAGE. INSPECTED LOWER DECKS FOR SMOKE OR FIRE DAMAGE, INSPECTED PNEUMATIC DUCTING FOR LEAKS, TESTED MAIN AND LOWER DECK SMOKE DECTORS SYSTEM. NO DEFECTS NOTED. CLEANED BOTH COALESCER BAGS, STARTED APU AND BOTH MOTORS PRESSUERIZED AIRCRAFT. NO FUMES OR SMOKE NOTED. ALL SYSTEMS OPS CHECK GOOD IAW A300 MM 21-70-00 AND AMM SUPPLEMENTAL MANUAL.