Most automotive Paint suppliers sell a universal aeresol spray that has a glass jar that you pour you own paint into. It is small( smaller than a standard spray bomb), has replacable air charge unit and they cost under $10.00. I use one just about any time there is area to small for me to get into with my spray gun or I don't want to do alot of gun cleaning. They emitt low over spray and you can just clean the glass jar and throw away the charge unit. They are perfect for spraying engine enamels and high-temp paints.
