Just after lunch yesterday, Michelle called that the Sentra’s engine was smoking and it stank. Signs of an overheat. Good thing she had already stopped the car. So I just asked her to let the engine cool, replenish the water in the coolant reservoir, and proceed to the parking.
Some helpful passersby also advised her to pour water over the radiator but I’m not too sure that helped much. Since the engine is off, coolant (if there is any left) is not circulating and that would mainly cool down the radiator and not the engine.