ELECTRICAL SMELL IN CABIN CAUSED ACFT TO LAND AT NEAREST ARPT.

Narrative

THE FLT ATTENDANT CALLED ME FROM THE FIRST CLASS CABIN AND NOTIFIED ME OF A SMELL IN THE CABIN. AS SHE ENTERED THE COCKPIT; I TOOK A LOOK BACK AND OBSERVED THAT THERE WAS NO SMOKE ANYWHERE IN THE CABIN. WE THEN CHKED ALL INDICATIONS IN THE COCKPIT; INCLUDING CIRCUIT BREAKERS; AND FOUND EVERYTHING NORMAL. WE ESTABLISHED COMS WITH ALL STATIONS AND THEY TOO VERIFIED THAT A SMELL WAS IN THE CABIN. I THEN SENT FO TO ASSESS THE SIT. I DONNED MY OXYGEN MASK AND HE WENT TO CHK. WHEN HE CAME BACK HE NOTIFIED ME OF A STRONG ELECTRICAL SMELL; BUT NO SMOKE. USING THE SMOKE IDENT/REMOVAL CHKLIST; WE ISOLATED THE UTILITY BUSSES AND THE RECIRCULATION FANS. WE THEN CHKED WITH THE FLT ATTENDANTS TO SEE IF THERE WAS ANY CHANGE IN THE SEVERITY OF THE SMELL. I ONCE AGAIN CHKED WITH THE CABIN TO SEE IF WE HAD ISOLATED THE CAUSE. THE AFT CABIN HAD CLRED SOMEWHAT; BUT THE MID AND FORWARD WERE ABOUT THE SAME. MY CONCERN INCREASED WHEN ONE OF THE FLT ATTENDANTS BEGAN TO COMPLAIN ABOUT EYE IRRITATION. WITH THAT IN MIND; I DECIDED TO DECLARE AN EMER AND LAND IN LBB. FO GOT THE CLRNC AND GAVE THE REQUIRED INFO TO ATC. WE METHODICALLY WENT THROUGH THE EMER DSCNT CHKLIST. WE WERE CLRED TO DSND TO 8000 FT AND DIRECT LBB. THE LNDG; ROLLOUT; AND TAXI WERE UNEVENTFUL. WE WERE ASSIGNED GATE X IN LBB. WE CHKED THE STATUS OF THE SMELL AND THE FLT ATTENDANTS RPTED THAT IT WAS VIRTUALLY ALL GONE. I FELT THAT WE HAD SUCCESSFULLY ISOLATED THE CAUSE OF THE SMELL AND DECIDED THAT AN EMER EVAC WOULD NOT BE NECESSARY.