@hazmail thanks for the input and nice setup!
Sounds like I have a bit more researching that I need to do, but until then I already have a cheap box fan and MERV8 furnace filters on the way. I’m going to make a mock up cardboard spray hood to help catch overspray and direct it into the filter, and if I like it then I can remake another out of more robust material.
I do want to eventually have a ducting system to exhaust everything outside, but anything is an improvement to what I have now (basically nothing). I use Createx airbrush paint which I think is water based and hopefully less of an explosion risk than solvent/oil based paints.