As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE TO BOS LEFT RECIRC INOP LIGHT AND LEFT RECIRC FAN STATUS MESSAGE APPEARED. A SLIGHT ELECTRICAL ODOR WAS NOTED BUT NO SMOKE. SELECTED LEFT RECIRC FAN OFF AND PULLED LEFT RECIRC CB. ODOR DISAPPEARED. REMOVED AND REPLACED LEFT RECIRC FAN. OPS CHECK GOOD.