As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT WHEN SELECTING BLEED VALVE ON IN THE COCKPIT WE GET A NOXIOUS DIRTY SOCK EXHAUST SMELL. SMELL GOES AWAY WHEN DESELECTING NR 1 BLEED VALVE. R & R LT ENG NR 5, 6, 7 SCAVENGE TUBES O-RINGS IAW MM 72-01-50. NO SMELL NOTED AT THIS TIME, NO LEAKS.