As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN CABIN THE SOURCE OF THE SMOKE IN THE CABIN WAS FROM A PASSENGER LAPTOP AT SEAT 4B. REMOVED AND REPLACED BOTH CABIN AIR RECIRCULATION FILTERS REF AMM 21-21-41-000-001-A AND AMM 21-21-41-400-001-A AND RAN PACKS TO AIR OUT CABIN. NO RESIDUAL SMOKE SMELL IN THE CABIN.