This has to be the shortest any of my sims have ever lived before ...

Mine just blow on their arms when I ask them to extinguish self. Which has no effect. They won't go to the showers even when I click on the extinguish option on the shower. The sprinkler system can be slow to operate sometimes and your sim dies as it starts up. Some of the premades houses have alarms but no sprinklers so don't get fooled.