As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. FLIGHT ATTENDANTS REPORTED A MUSTY & MOLDY BUT SWEET ANTI-FREEZE TYPE CABIN ODOR, THAT CAUSED THEM TO BE ILL & RECEIVED MEDICAL ATTENTION. ACCOMPLISHED JC 26L000021001 & JC 26L00021002. TROUBLESHOOT CABIN AIR QUALITY & APU SMELL IN CABIN. APU HOURS 16283 & OIL LEVEL OK. APU OIL FOUND AT FULL MARK, NO LEAKS NOTED & MUSTY SMELL NO LONGER.