Once I got into a huge fight with my brother. He was refusing to listen to my point of view, so I got very frustrated. I ended up storming off to my room and hurting myself. Instead, I should have tried to talk it out with my brother, or tell a parent.
Hope that helps :)
No u shouldn't leave it open.
It can be really dangerous.
For example: It might sound crazy but imagine a rodent eating the hose that the gas passes through,the gas leaks and dangerous things can happen cuz propane is flammable especially when mixed with air(oxygen).
B. Unintentional accidents