What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW SMELLED ODOR IN AFT OF THE AIRCRAFT AROUND SEAT ROW 28ABC. FLIGHT CREW DECLARED AN EMERGENCY INTO ITS DESTINATION OF CLT AND LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE NOTED A LIGHT SMELL OF MOUTH WASH WHEN ENTERING THE AIRCRAFT TO INSPECT IN "DARK" CONFIGURATION AT AREA. ACCOMPLISHED TROUBLESHOOTING OF CABIN AIR QUALITY PER JOB CARD 26L00021001. OPERATED BOTH ENGINES AND APU PER CONFIGURATION TABLE. NO DEFECTS NOTED.