As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3135 - WHEN HUFFER CART WAS TURNED ON THE FLIGHT ATTENDANT NOTICED A HAZE IN THE CABIN AND AN ELECTRICAL SMELL. COMPLETED WORK CARD 0550-2002. IDENTIFED SMELL CAME FROM PNUMATIC START CART. RAN ENGINE, NO SMELL. COMPETED WORK CARD 2100-2005. COMPLETED AMDS 2100-2005. REPLACED CABIN RECIRC FILTERS. NO ODOR NOTED.