What was found
FLT#872, SLC-JFK. (AIRCRAFT PERFORMED AN AIR TURN BACK TO SLC) ' ODOR EVENT REPORTED BY INFLIGHT TEAM CLIMBING ABOVE 15000 FEET ODOR STRONGEST IN FWD GALLEY. ISOLATED PACK 1 ( OFF ) PER ODOR PROCEDURE. ODOR DISSIPATED HOWEVER ALL INFLIGHT REPORTED HEADACHES. F1 NAUSEOUS; REMOVED AND REPLACED LH OZONE FILTER REF AMM 21-51-41. PERFORMED DUAL ENGINE RUN AND ISOLATED PACKS WITH BLEED FROM ENG 1, 2, AND APU CW INFO NOTICE 2017-T015 SECTION A ISOLATED FAUKT TO TYPE 10(2) 1C PER TSM 05-50-00-810-085-B AIRCRAFT OK FOR SERVICE.'