What was found
DURING CRUISE CLOSE TO TOD, F/A NOTIFIED FLIGHT CREW THAT THERE WAS A STRANGE SMELL IN THE CABIN. THE FIRST OFFICER INSPECTED THE CABIN AND DETERMINED THAT THERE WAS AN UNKNOWN SMELL THAT DID NOT SEEM TO BE CAUSED BY SOMETHING BURNING. AS A PRECAUTION, CREW RAN QRC AND QRH AND REQUESTED PRIORITY TO MSY AS THE NEAREST SUITABLE AIRPORT DUE TO ALTITUDE. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MX AND CREW PERFORMED OPERATIONAL TEST OF THE BLEED AIR SYSTEM AND COULD NOT DUPLICATE SMELL. OPS CHECKED GOOD.