I'm reading everyone's advice -- but the implication is storing even a little bit of gas is bad? I have (3) 5 gallon metal CARB-compliant jerricans in my garage, for the portable generator. They have rubber gaskets around the (seeming) tight screw-on lids. And of course I have electric in the garage -- lights, garage door opener, wall sockets. How much risk am I exposing myself and my family to? Is there a safe way to store small amounts of gasoline for this purpose?