Narrative:

On departure; the first officer and I noticed a very strong odor in the aircraft. I proceeded to call the cabin to inquire if they could smell the odor that we were experiencing. The number one flight attendant informed me that she could smell it and passengers were complaining about the odor as well. It was a very strong odor that I have never experienced before. It had a chemical smell to it and we could not determine the origin. I proceeded to identify as a priority handling with departure and we returned for landing. The total time in flight was 10 minutes and the landing was uneventful. After being checked by the arff crew we proceeded to the gate. An entry was made in the logbook and maintenance was notified. It is also important to note that two days prior; this aircraft had to return to the gate due to an odor on the aircraft and according to ZZZ maintenance the aircraft had another logbook indicating an odor in the cabin. There were no health issued with the passengers; and the flight attendants declined to be checked in ZZZ.

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Original NASA ASRS Text

Title: B737-800 flight crew reported strong fumes on flight deck during takeoff; consequently; they returned to the departure airport.

Narrative: On departure; the first officer and I noticed a very strong odor in the aircraft. I proceeded to call the cabin to inquire if they could smell the odor that we were experiencing. The number one flight attendant informed me that she could smell it and passengers were complaining about the odor as well. It was a very strong odor that I have never experienced before. It had a chemical smell to it and we could not determine the origin. I proceeded to identify as a priority handling with departure and we returned for landing. The total time in flight was 10 minutes and the landing was uneventful. After being checked by the ARFF crew we proceeded to the gate. An entry was made in the logbook and maintenance was notified. It is also important to note that two days prior; this aircraft had to return to the gate due to an odor on the aircraft and according to ZZZ maintenance the aircraft had another logbook indicating an odor in the cabin. There were no health issued with the passengers; and the flight attendants declined to be checked in ZZZ.

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.