For just a burst, you can go low rent with a single action venturi air brush, and they usually come with an adaptor that you can connect to a car inner tube. It's still advisable to put some sort of filter in the air line. With one of these brushes you can get a cone of about an inch and a half. My first air brush was one of these and I was able to spray a lot of different paints through it. They are no good for fine work, but great for coverage, and would be a better option than a spray can IMO.