As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 205, EWR-FLL. ODOR OBSERVED SMELLED ON TAXI OUT AND ON DESCENT. SMELL LIKE SHARPIE MARKER IN COCKPIT & CABIN ; ODOR IN THE CABIN WAS ADDRESSED AND APU PLACED ON MEL REF MDDR# 454855 ACCOMPLISHED INFO NOTICE 2017-T015I PERFORMED APU ECS DECONTAMINATION. NO ODOR OBSERVED. REF MDDR 454855 APU INOP DUE TO ODOR IN CABIN RECIRCULATION FILTERS REQUIRE REPLACEMENT. R/R RECIRCULATION FILTERS PER AMM 21-21-41