Los Angeles firefighters determined Sunday that an unidentified spill at a USC  science building was not dangerous, and university operations returned to normal.

The request for an investigation about a pungent smell emanating from the first-floor room of Seaver Science Center at 920 Bloom Walk was reported around 6:30 p.m., according to fire department spokesman Brian Humphrey.

An LAFD HazMat team was on-site, talking to USC scientists to determine the scop and nature of the odor and leak and develop a strategic mitigation plan. 

The spill was deemed harmless and cleared around 8:10 p.m., according to campus police, who allowed people back into the building.

There were no reports of injuries or illness.