As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#598, MCO-LGA.' DURING DESCENT BELOW 10000' INTERMITTENT CHEMICAL SMELL OF LOW TO MEDIUM INTENSITY APU WAS OFF; COMPLISHED WITH INFORMATION NOTICE 2017-T015 SECTION A ISOLATED FAULT TO TYPE 10 SUSPECT AMBIENT AIR AT LOCAL AIRPORT (LGA) HIGH PRECIPITATION / HIGH HUMIDITY AS PER INFO NOTICE NOTE PAGE 4 PER TSM 05-50-00-810-085-B AIRCRAFT OK FOR SERVICE.'