Baltimore County fire officials evacuated homes Tuesday in the 4000 block of Fenor Road in Halethorpe after several reports were made of a chemical odor.
The smell was detected around 5:30 p.m. in homes on both sides of the street, according to Baltimore County fire officials.
One person was taken to an area hospital with non-life-threatening injuries, according to fire officials.
Crews flushed a sewer with “copious” amounts of water. Officials cleared the scene around 10:15 p.m., a fire official stated in a tweet.