As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR CREW SMELL SULFUR ODOR IN COCKPIT, DONNED 02 MASK AND SMOKE GOGGLES. FLT ENG THOUGHT ODOR WAS COMING FROM GASPER FAN. INSP AC AND CARGO WITH FIRE DEPT, NOTHING FOUND. AFT OFF LOAD PRESS AC HAD ELECTRICAL ODOR COMING OUT GASPER. GASPER FAN CIRCUIT BREAKER POPPED AND WHEN RESET POPPED AGAIN. *S/D* REMOVED AND REPLACED GASPER FAN PER MM 21-23-011-4.