As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ENTERING AIRCRAFT, I NOTICED A FAINT BURNING SMELL. SEVERAL PASSEGERS WERE COMPLAINING ABOUT SMELLING SMOKE AS WELL. SMOKE REPORT HAS BEEN FILLED OUT WITH AS MUCH INFO AS I COULD GET. AFTER COMPLETION OF L/P 5966673, NO FURTHER ABNORMAL SMELL DETECTED.