Erj-145 flight crew reported a fume event that resulted in a return to the departure airport.

Attributes
ACN	1756237
Time
Date	202008
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb Takeoff
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

Aircraft X had a write-up for smoke/fumes in the past week. On date; it had an eval flight and was signed off. Upon takeoff; an odor began emitting that smelled like a wet rag/skunk. I noticed right on the climb out and it became increasingly worse. The first officer (first officer) did not notice anything except right after take-off. After reaching a safe altitude I asked the flight attendant (flight attendant) if she smelled something as well; she replied positively. I told her we would be returning to the field immediately and then the first officer and I then advised ATC. We smelled the fumes mostly throughout the entire duration and faintly after landing. We taxied back to the gate with emergency equipment following us.captain and flight attendant; first officer only smelled an odor on takeoff.fumes/odor.precautionary air return landing. Tried using 02 masks but mine was giving me a bad feedback through the headset. First officer's mask had a boom issue and could not communicate at all. We decided then not to use the masks.find what is causing these issues.

Original NASA ASRS Text

Title: ERJ-145 flight crew reported a fume event that resulted in a return to the departure airport.

Narrative: Aircraft X had a write-up for smoke/fumes in the past week. On date; it had an eval flight and was signed off. Upon takeoff; an odor began emitting that smelled like a wet rag/skunk. I noticed right on the climb out and it became increasingly worse. The FO (First Officer) did not notice anything except right after take-off. After reaching a safe altitude I asked the FA (Flight Attendant) if she smelled something as well; she replied positively. I told her we would be returning to the field immediately and then the FO and I then advised ATC. We smelled the fumes mostly throughout the entire duration and faintly after landing. We taxied back to the gate with emergency equipment following us.Captain and FA; FO only smelled an odor on takeoff.Fumes/odor.Precautionary Air Return landing. Tried using 02 masks but mine was giving me a bad feedback through the headset. FO's mask had a boom issue and could not communicate at all. We decided then not to use the masks.Find what is causing these issues.

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.