An emergency response scene has been established in Mount Lebanon, just outside of the Pittsburgh-metro area.
According to official reports, three people were rushed to a local area hospital as a result of the chemical smell, which was initially reported at around 3:30 p.m.
Reports indicated a chemical smell was coming from the area of Bower Hill and Jayson Ave. near Marlin Drive.
Emergency officials discovered a sulfur dioxide leak inside of a residence. A contractor was removing an old refrigerator which had a broken supply line, causing chemicals to leak out.
2 firefighters and a contractor has been transported to a local hospital.