What was found
CABIN & COCKPIT FILLED WITH SMOKE & FUMES ONCE BLEEDS WERE TRANSFERRED TO ENGINES. SWAPPED BLEEDS BACK TO APU & SMOKE & FUMES STOPPED. CONTACTED MX & CONFIRMED THIS WAS 1ST FLIGHT AFTER COMPRESSOR CLEANING. SUSPECT RESIDUAL CHEMICALS FROM COMPRESSOR WASH. RETURNED TO PHL, NO EMERGENCY DECLARED, UNEVENTFUL LANDING. PERFORMED ENG RUN IAW AMM 71-00-00 FOR 20 MINUTES. NOTED NO ODOR OR SMOKE AT THIS TIME.