Retired some time ago after 30 years as a professional firefighter. The landlord isn't ignorant he is probably just obeying the local fire code. If an FD inspector found the stuff you'd be up to your eyeballs in grief. Don't just try to disguise the fuel container as something else. Find a place to store it even if you have to walk a block to get it. When someone tells you that it takes a blowtorch to light the stuff you'd best ignore that too. Nitro goes up with even a small spark or heat from a glow plug. Even FAI fuel will light easily, it is alcohol after all. Don't tell me I don't know fuel, I've been flying since the gasoline and oil days. If alcohol didn't ignite easily you would never see flambeau dishes in at a high end eatery.