As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT CREW REPORTED VISUAL SMOKE AND SMELL IN COCKPIT AND CABIN. SMOKE DISSIPATED WITHIN A MINUTE OR SO. QRH FOLLOWED RETURNED TO AIRPORT AND SWAPPED TO DIFFERENT AIRCRAFT. MAINTENANCE FOUND THE LEFT PACK COALESCER BAG CONTAMINATED. REMOVED AND REPLACED IAW AMM.