As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THERE WAS THE SMELL OF BURNING MATCHES, COULD NOT DETERMINE THE CAUSE OF THE SMELL. (FLT 6445) PERFORMED VISUAL INSPECTION THROUGHOUT COCKPIT, GALLEY AND AVIONIC BAY WITH BOTH LEFT AND RIGHT PACKS ON, NO UNUSUAL SMELL NOTED AND NO VISIBLE BURNING FOUND. VERIFIED NO UNUSUAL SMELL COMING THROUGH ANY GASPER VENTS ON GROUND.