What was found
FLIGHT 5284 - STL-ATL - DURING CRUISE FLIGHT AT FL330, -PITOT 2 INOP- EICAS MESSAGE APPEARED. TURNED OFF THE PITOT 2 SWITCH AND RAN THE QRH. A SLIGHT ELECTRICAL SMELL IN THE FLIGHT DECK. TALK TO THE F/A, WHO ALSO SMELLED THE ODOR. ALSO NOTED A SLIGHT HAZE IN THE CABIN. DIVERTED TO BNA WITHOUT FURTHER INCIDENT. REMOVED AND REPLACED PITOT 2 CURRENT SENSOR SOCKET K0054 AND RELAYS K0055 IAW EMB MM 30-31-50. VERIFIED HEATER ELEMENTS IN PITOT AND STATIC PORTS IN SATISFACTORY CONDITION. OPS CHECK GOOD IAW MM 30-31-00, NO DEFECTS NOTED.