The all-clear has been given after a strange smell prompted the evacuation of two student residences at Western University.
The university says firefighters responded at around 2:55pm on Wednesday after the smell was reported in the basement of Sydenham Hall. The fire alarms were pulled at both Sydenham and Medway halls, which were evacuated as a precaution.
Fire officials say the smell was caused by bromine pucks that caused a chemical reaction with something else in a trash container. The material has since been removed from Sydenham Hall and students have been allowed to return.
Medway Hall was cleared for re-entry around 5pm, and Sydenham Hall remained closed off until around 6:45pm.
The Sydenham Dining Hall will be closed until 11:30am Thursday morning as a result of the incident, the university says. Until then, Medway-Sydenham students can access the snack bar at Delaware Hall and eat breakfast at Elgin Hall or Delaware Hall beginning at 7:30am.