Er...it's propane stove - aided by the owner - that is a safety hazard :). Don't blame the detector, it just died, that's it.
Doxie - I think those stoves that I've seen, had no regulator inside, only valves. Though there is safety push/lock feature in the oven valve.
There is such thing as an (optional) excess flow valve that would shut the line off when there is exactly a leak - detected by abrupt increase in propane flow. It comes in both low and high pressure. I installed one before my cat heater, since this is the only propane item that could run with me sleeping. But I doubt excess flow valve would work in the case described above.
