Date: 202201
Local time of day: 1201-1800
Aircraft: Airbus Industrie Undifferentiated or Other Model
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Climb
Aircraft component: Coalescer Bag
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Not Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human factors: Workload; Troubleshooting
Second reporter function: Pilot Flying; First Officer
Anomaly: Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Detector: Person Flight Crew
When detected: In-flight
Result: Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem; General Maintenance Action
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: Upon climb out of ZZZ we noticed a strong odor of wet dog/dirty sock in the flight deck. I asked the Flight Attendant if they noticed an odor and they said they had; but most noticeably in forward cabin. We donned our O2 masks and ran QRH checklist and smell seemed to dissipate enough that we continued to destination. Filled out the odor form and put an entry in Approved Model List.Flight attendants flew same aircraft in night before. Aircraft sat overnight in wet/rainy conditions. Odor was noticed by flight deck and in First class cabins. Odor seemed to dissipate as flight continued. Passengers noticed odor; but no one complained of symptoms or irritations. Followed QRH procedures. Wrote the odor up in Approved Manuel List in ZZZ1 and filled out odor form. [Captain's suggestion was to] find out the cause of these odors and do everything possible to eliminate them.


Second narrative: Aircraft overnighted at ZZZ. First flight of the day for the aircraft. Light rain that morning. Start up and Taxi uneventful. On climb-out from ZZZ runway XXL; I asked the Captain if he smelled the odor/fumes. He said yes; but we both were not real sure as to what it was. Was it just a transient smell from the engines getting up to speed or was it just an old aircraft that just has a funny smell about it.......we were not real sure. As we got to cruise altitude the smell was not that bad; but it had not dissipated; so we put on our O2 masks and pulled out the QRH to see if we could figure out if we had a problem. The Captain asked the Flight Attendants if they smelled anything in the back of the aircraft. I believe the Flight Attendants stated that they smelled a slight odor in the front half of the cabin. We executed the Odor Checklist in the QRH; which had us turn off Pack #1. This seemed to have worked to dissipate the odor; so we continued on to our destination ZZZ1. Once at the gate; the Captain put the odor gripe in the Aircraft Maintenance Logbook. He also completed the Fume Event report. I called in sick for the next 2 legs we were scheduled for and went to the hospital to get checked out. The checklist of blood tests provided by APA [ALPA] was a good help. It appears all the tests were normal; though the timeline from the event to the tests at the hospital was in the 3-4 hour range. In retrospect; I think the odor was a 'dirty sock smell'. I suspect that an oil or hydraulic fluid found its way into the system. Any fluid leaks; in any aircraft system; needs to be tracked down.


Synopsis: Air Carrier Captain and First Officer reported a fume event during departure climb.