Narrative:

When preparing for departure in ZZZ1 I smelled what is best described as engine exhaust/oil. The APU was off and jet bridge air was being supplied to the aircraft. I felt like I had an instant headache. I have not had that experience before; nor did I realize that this could be an issue or what exactly was causing it. I asked the first officer [first officer] if he wouldn't mind turning off the air. He obliged. I started the APU and selected the bleed on. The airflow seemed to help a little. I didn't realize at the time just how 'off' I was. Fast forward to arriving at the gate in ZZZ. The mid flight attendant after deplaning was done asked if smelling oil in the cabin was 'normal'? I said; 'no.' I could physically see she was not physically and mentally herself. I told her we needed to seek medical attention. I grabbed the logbook and asked the crew to deplane as soon as possible. The two aft fas said as soon as they got to mid cabin they were overwhelmed with the smell of oil. We documented it all in the logbook. The mid flight attendant stated she smelled it on the descent and it got worse and worse. I reminded her that these are items that she should not hesitate to call the flight deck for. I always include this in my briefing and try to make sure the cabin crew is comfortable with calling for anything and that sharing information is crucial to the safety of flight. I truly believe she didn't call as it affected her decision making. Without knowing why it occurred it is too difficult to state how to avoid it in the future; but I know that I felt ill for a solid 24-36 hours after being exposed.

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Original NASA ASRS Text

Title: A321 Captain and a Flight Attendant reported experiencing a fumes event; which worsened during descent. On arrival crew members received medical treatment for health issues.

Narrative: When preparing for departure in ZZZ1 I smelled what is best described as engine exhaust/oil. The APU was off and jet bridge air was being supplied to the aircraft. I felt like I had an instant headache. I have not had that experience before; nor did I realize that this could be an issue or what exactly was causing it. I asked the FO [First Officer] if he wouldn't mind turning off the air. He obliged. I started the APU and selected the bleed on. The airflow seemed to help a little. I didn't realize at the time just how 'off' I was. Fast forward to arriving at the gate in ZZZ. The mid FA after deplaning was done asked if smelling oil in the cabin was 'normal'? I said; 'no.' I could physically see she was not physically and mentally herself. I told her we needed to seek medical attention. I grabbed the logbook and asked the crew to deplane ASAP. The two aft FAs said as soon as they got to mid cabin they were overwhelmed with the smell of oil. We documented it all in the logbook. The mid FA stated she smelled it on the descent and it got worse and worse. I reminded her that these are items that she should not hesitate to call the flight deck for. I always include this in my briefing and try to make sure the cabin crew is comfortable with calling for anything and that sharing information is crucial to the safety of flight. I truly believe she didn't call as it affected her decision making. Without knowing why it occurred it is too difficult to state how to avoid it in the future; but I know that I felt ill for a solid 24-36 hours after being exposed.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.