As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING ODOR WHEN BLEEDS TRANSFERRED TO APU AFTER LANDING DISSIPATED AFTER A FEW MOMENTS / DEFERRED BOTH PACKS PER MEL 21-51-1-2 OPTION 3. PERFORMED OPS TEST OF AIR CONDITIONING DISTRIBUTION SYSTEM IAW CRJ 700 AMM 21-51-00-710-801. SMOKE ODOR NOT PRESENT FOR THE HOUR PACKS WERE RAN. OPS TEST GOOD. THIS CLEARS MEL.