I wasn't afraid so much of the gas as I used to live near factories and two of them had major fires. They both had propane tank stores and those tanks burnt for several hours (but the fire brigade were monitoring them) and they didn't blow up, so I figured it would take utter carelessness to blow myself up. I am instead in fear of my own beadmaking skills. OK, I'm still a newbie but I'm thinking what if I'm rubbish a year down the line?
In the UK you are allowed to have large propane canisters indoors (my neigbours have heating running from two large shoulder height tanks in their kitchen), and believe it or not in parts of Italy they have cookers which run on an internal propane gas tank situated next to the oven - I know this as I have cooked on one.