I have several hazardous/flammable tanks/containers in my shop/garage, including-
propane
acetylene
oxygen
butane
mapp gas
gasoline
diesel
kerosene
white gas
acetone
denatured alcohol
laquer thinner
paint thinner
mineral spirits
spray paint
wood stain
motor oil
tranny fluid
gear oil
WD-40
other various lubricating oils
other various cleaning products
There have also been cars/trucks, motorcycles, atv's, generators, chain saw, etc, that have gasoline or gas/oil mix in their fuel tanks and cabuerators, parked or kept in the garage at various times.
This includes the previous places I've lived, as well as the current place.
Several years now and I haven't blown the place up yet :)