Narrative:

We were operating as (flight) from ZZZ1-ZZZ. While on descent into ZZZ through approximately 18;000 feet we noticed an odor once we entered visible moisture. The odor persisted while on descent but once we were out of the visible moisture; the odor lessened. Upon arrival to the gate and after engine shutdown; one of the aft flight attendants called to report that the odor was very strong in the aft of the aircraft. A logbook entry was made and maintenance was called. I also spoke with the [duty manager] and made a report to him regarding the cabin odor. After the aircraft was deplaned; the flight attendants and I felt some symptoms and we spoke with medlink. After conferring with medlink; we decided to go to the hospital for evaluation and treatment. During cruise; we had a lavatory smoke warning which only lasted a few seconds. The flight attendants performed an inspection of all three lavatories and found no evidence of smoke or fumes in any of the lavatories.

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Original NASA ASRS Text

Title: A320 flight crew reported a fume event during arrival descent. Entire flight crew received medical evaluation and treatment at local hospital.

Narrative: We were operating as (flight) from ZZZ1-ZZZ. While on descent into ZZZ through approximately 18;000 feet we noticed an odor once we entered visible moisture. The odor persisted while on descent but once we were out of the visible moisture; the odor lessened. Upon arrival to the gate and after engine shutdown; one of the aft Flight Attendants called to report that the odor was very strong in the aft of the aircraft. A logbook entry was made and Maintenance was called. I also spoke with the [Duty Manager] and made a report to him regarding the cabin odor. After the aircraft was deplaned; the flight attendants and I felt some symptoms and we spoke with Medlink. After conferring with Medlink; we decided to go to the hospital for evaluation and treatment. During cruise; we had a Lavatory Smoke warning which only lasted a few seconds. The flight attendants performed an inspection of all three lavatories and found no evidence of smoke or fumes in any of the lavatories.

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.