The little RV fire extinguisher in our doorway has discharge duration of 14 seconds. If you catch something quick, it might stop a fire. I doubt you could use it to help someone escape. Or even stop a fire.
Key, they need to be in a handy spot and easily accessible. You have to know how to use them. Buried in a locked cargo hold or stashed under a dinette seat is not a good spot.
I have been considering purchasing some of these Element Fire Extinguisher sticks. You can get them in a 50 & 100 second duration. I like the idea of being able to have them placed in an easy to access location, and be out of the way. I do believe I would have to purchase some old fashion road flares, to teach the family how to use the Element Fire Extinguisher, so they had some practice.
https://www.amazon.com/Augusta-Motor...06552214&psc=1
What has kept me from buy any yet, is the lack of real use reviews. Everything I have read and seen, discusses its safety and how compact they are. Nothing about how it worked on a real situation.
Remember to replace your Fire alarm battery yearly.
We have an escape plan. Now the kids are older, we now have a fire/emergency discussion every spring. When they were younger, we would do a fire drill out of the bunk ends (HTT), and did it a couple times a year, when they were small and made a game out of it. The end bunk windows are zippered. Rule, when the end screen and canvas zippers are zipped up, they MUST be located top and center. Middle of the night anyone can find it. E-exit window I think is a joke, but we all know how to open it, deal with the screen, and push bar. It is directly across from the door, so I cannot see every using the window, but you never know. We also have a general meeting location, that works for any CG. I do get the roll of the eyes from the kids now. But safety first!