As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUMES IN FWD CABIN BY PILOT, BOTH FAS AND FIRST CLASS PASSENGERS. SMELLS LIKE BUTANE. PERFORMED OPS CHECK OF PACK 1 AND 2 INCLUDING ENGINE RUNS AND BLEED VALVE. OPS CHECK GOOD. UNABLE TO REPRODUCE SMELL. NO SMELL OR FUMES NOTED AT THIS TIME.