As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT AND CREW REPORTED AN OFF ODOR IN THE CABIN JUST AFTER TAKEOFF. THE PILOT IMMEDIATELY RETURNED TO THE HELIPAD AND CALLED FOR MAINTENANCE. THE MECHANIC ARRIVED AND INSPECTED THE AIRCRAFT FOR POPPED CIRCUIT BREAKERS, BELTS AND FLUID LEVELS. NO DEFECTS WERE NOTED. PILOT PERFORM AND GROUND RUN AND TEST FLIGHT WITH NO DEFECTS FOUND. AIRCRAFT WAS RETURNED TO SERVICE.