Grease fires are never fun, but they are more common than they should be. Most are accidents, so I’m not going to go into a big list here of how to prevent them. The one thing I will talk about is how to put them out.
However much one should, at all times, have a proper fire extinguisher at hand, that’s not always the case. Even if one is available, the fire may be small and you don’t necessarily want to spray your entire kitchen with chemical foam. Salt or baking soda sprinkled LIBERALLY over the fire should put it out. Water and covering the fire in with a towel are terrible ideas and do not work if it really is a grease fire. Putting water on a grease fire can cause a large flare up as you’ve just aerosolized the grease.
It should be noted that throwing baking powder or flour on a fire will result in a nice fireball as well.