I can certainly understand your dilema, you can't expect to buy a gallon of fuel each outing to the field, only to give away what you haven't used, but I wouldn't call your landlord ignorant. You are breaking fire laws by storing flammable materials in a residential building, and I'm sure there are extreme liability issues that they have to contend with.

A bleach bottle may be a way to hide the fuel, just be sure to excercise extreme caution while keeping that stuff indoors!
Dennis-