Make sure you know what type of fire you have, what type of extinguisher you need to put it out and where that extinguisher is located.
Standard practice is to have the extinguisher in the vicinity in case something does happen.
If the fire cannot be completely extinguished with one extinguisher, leave the area, use a pull station to call the Toronto Fire Department. If possible, wait in the vicinity of the main entrance,to advise attending emergency personnel. As fume hoods cease to function during a power outage, no one will be allowed back into that area until it has been adequately ventilated,if required,after power restoration. Call 9-911 and provide sufficient information to locate the victim and for emergency personnel to anticipate treatment. If possible arrange for attending emergency personnel to be met in the vicinity of the front office.