Narrative:

The captain left the flight deck to get some food in the terminal. I remained on the flight deck preparing for the next flight back to ZZZ1. Cleaners came on board as usual to clean the aircraft. Someone had partially closed the flight deck door during this process. The next thing I know I'm overwhelmed and choking on what feels like a strong aerosol type spray. I immediately departed the flight deck as it was hard to breathe. When I exit the aircraft on to the jet bridge the entire cabin crew and deadhead crew were waiting for the cleaners and sprayers to complete the cleaning process. I got some water to try and clear my airway. While I was doing that one of the flight attendants went to talk to the gate agent regarding this situation. Apparently this had happened before. No one knew I was on the flight deck nor did they properly clear the aircraft before spraying. I don't know how long I was breathing those chemicals before it overwhelmed me. I was never informed that the aircraft was going to be sprayed while I was on board.

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Original NASA ASRS Text

Title: Air carrier First Officer reported ingesting aerosol fumes in the flight deck from cleaners that were on board sanitizing the aircraft without making sure it was empty.

Narrative: The Captain left the flight deck to get some food in the terminal. I remained on the flight deck preparing for the next flight back to ZZZ1. Cleaners came on board as usual to clean the aircraft. Someone had partially closed the flight deck door during this process. The next thing I know I'm overwhelmed and choking on what feels like a strong aerosol type spray. I immediately departed the flight deck as it was hard to breathe. When I exit the aircraft on to the jet bridge the entire cabin crew and deadhead crew were waiting for the cleaners and sprayers to complete the cleaning process. I got some water to try and clear my airway. While I was doing that one of the flight attendants went to talk to the gate agent regarding this situation. Apparently this had happened before. No one knew I was on the flight deck nor did they properly clear the aircraft before spraying. I don't know how long I was breathing those chemicals before it overwhelmed me. I was never informed that the aircraft was going to be sprayed while I was on board.

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.