Fair enough. I meant more the way it's stored and dispensed is a hazard - those bottles are huge.
The one bit I don't trust is the additive that gives it that stench - Ethyl Mercaptan (most of the time). It's rather alkali, an irritant and all round bad for the environment. By law stove propane has to have an additive so you can smell when there's a gas leak or whatever (green gas doesn't have it because it isn't used as a fuel in the conventional sense). It's there is very, very small amounts and obviously has a boiling point around room temperature (much higher than Propane's boiling point, mind) and will condense in magazines and around o-rings when they get cold.
I wish someone would just produce cheap cans of clean propane without additives, then I'd seriously consider switching. Perhaps I'm more adverse to the smell than others, so I can see why you'd want to especially when green gas is so ludicrously expensive.
Edit
Not long ago I was looking at refrigerants and how they perform. Obviously they don't have the smell but are still quite cheap to buy from European retailers (around £40 for a massive cylinder). The environmental implications aren't great with some of the gasses, but then I suppose we're literally throwing bits of styrene into the woods most of the time we play so hey.
If I go down that route then I'll let you all know how I get on.