Call me a dummy. I probably deserve it.
But I almost always have containers of gasoline in my shop. And this is my WELDING shop!
I do keep it in approved containers and don't use it to scrub the floors with, but I do have a fair amount of gas there most of the time and (until now) haven't really given it much thought.
I do think that IN THE EVENT OF A FIRE, it would be best to not have fuel in my shop. But I don't think that the presence of the fuel is much of a fire risk by itself (ie, it's not likely that it will contribute to a fire STARTING).
The gas in my shop is in the form of 5gal steel cans and/or gas tanks in any number of trucks/tractors/mowers/motorcycles/weedeaters.
When I first thought about adding my $0.02 about this, I figured that I'd catch heck for mixing gasoline and welding, but in my defense, my portable welder is fueled by gasoline, so no chance of removing the fuel from welding there.
And my cars all have hot exhaust pipes that run very near the fuel tanks. So does every other car on the road, and even when they're clapped out POS's, they generally don't burst into flames from fuel vapors.
I think that in a perfect world, it would be best to have all fuel stored in a safe place, but at my place, that would require that I have a fuel storage area big enough for many cars, trucks, jeeps, mowers, weedeaters, motorcycles, etc.
So with all those fuel burners storing their own fuel, I'm not going to bother to move a couple 5gal fuel cans out of the shop - it'd not significantly reduce the fuel that is "stored" in my shop.
Mark