One man was taken to the hospital after a hazmat situation at the Riverside Apartments in Gaston, according to the Washington County Sheriff's office.
Nearby buildings were evacuated as a precaution, the sheriff's office said in a series of tweets. There was a strong chemical smell at the apartments.
The man, 55, was spotted in distress by a woman in the apartment building, dragged to safety by deputies and decontaminated.
The Portland Police Bureau bomb squad has was dispatched to the scene "out of an abundance of caution," police said.
The origin of the smell could not be found. No bomb was found.