As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MEL 21-30 AUTH 110241D-C ON TAXI OUT, BOTH PACKS RUNNING, CABIN AND COCKPIT FILLED WITH STRONG SMELL OF SMOKE. TURNED OFF PACK #1 AND SMELL WENT AWAY.REF LOG PAGE 4599679 ITEM 2. PACK 1 ACM REQ REPLACEMENT AND PERFORM ETN-EM-21-062.-C/A-RAR LH ACM IAW EO-EM-2100-048R2. NO FURTHER DEFECTS NOTED AND OPC GOOD.MEL ITEM RESTORED