The times I focus on fire fighting in the pre flight safety briefing, I use the number of people dead from the Air Canada toilet fire to emphasize the importance of communicating properly with the pilots.
From what I have read about that accident, had the pilots been informed immediately & precisely about the severity of smoke development in the cabin, the outcome would have been far different.
A real life example tends to drive the message home far more effectively than a mere rehashing of procedures.