Dangers of Propane

[SPCarroll]

I just bought a small two burner camping stove for my boat. It runs on propane and I bought a little green canister for it. One concern I have is obviously that the propane will leak into the bilge and at a spark the boat will blow up. Another is all of the warnings in the owners manual that say yo never use in an enclosed area because I will die of CO poisoning. I used it today with the hatches and dorade vents open. I'm just wondering if I use this type of stove, how likely will I be to not wake up in the morning. I'm living aboard and I must say that a hot bowl of oatmeal was a nice change from endless pop-tarts.
Thanks!