one point – Oxygen is not flammable. It’s an oxidizer. one of 3 components for a fire – oxygen, fuel, and heat. However, hospitals have oxygen pipes throughout the building. While oxygen it’self won’t burn, it will make other things burn quite intensely. therefore a leak is dangerous as many things that won’t normally burn will burn intensely if exposed to high enough oxygen content. And some items may spontaneously combust when exposed to high oxygen content.
That was our standard procedure when backpacking. Whoever was first in line when we set out in the morning used their walking stick to clear the trail