B757-200
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 168; Flight Crew Total 14704; Flight Crew Type 7704
Physiological - Other
Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Illness / Injury; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem; General Maintenance Action
Aircraft
We flew from enroute climb to parking with only the right pack operating. Upon arrival in ZZZZ; during taxi in; the First Officer and I both noted that we did not feel well.  Upon exiting the aircraft after the shutdown and secure checklists were complete; we both felt nauseated; with mild headaches and sore throats. We were both suspicious of atomized oil in the bleed system from the right pack. I had nausea the beginning of the morning with a headache and woke up from rest with a headache which didn't clear up until evening when we reported for duty. For our return flight; we planned to isolate both packs to determine if oil fumes were present. We operated both packs on the ground after start and during taxi. We sensed no abnormal odors during idle thrust and taxi. After takeoff and during climb we selected the left pack off; leaving just the right pack operating as we had accomplished on previous flight. Within minutes; we both determined that we began to have sore throats and there was no question that there were fumes/oil present in the cabin air. We selected the right pack off and the left pack on. After several minutes; the oil odor disappeared and with in another 10 minutes; our sore throats began to clear up. I wrote up a discrepancy for the odors coming from the right pack on log page on arrival.
B757-200 Captain reported experiencing physiological symptoms due to fumes during flight. On the return flight; the flight crew identified the right pack as the cause of the fumes.