As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, PUNGENT BURNING OR MELTING SMELL OCCURRED DURING THE LAST FIVE MINUTES OF FLIGHT. TURNED OFF NR 2 PACK AND SMELL WENT AWAY. MAINTENANCE INSPECTED PACK NR 2 SYSTEM AREA, CLEANED RAM AIR DUCT. OPS CHECKED GOOD IAW EMB 145 MM 21-60-00. AIRCRAFT RETURNED TO SERVICE. SDR REMAINS OPEN PENDING MFG NAME AND S/N DATA.