Don't spray into the dust pile.
If I'm on top of things, I get the shop cleaned up, vacuum around where I'll be spraying, and run the air filter for awhile. Then I let things settle a bit, and spray.
Most of the time, I'm in a hurry and for small projects I often just hang it from the ceiling. I'll use the air hose to approximate the spraying, and see if I stir up any dust. Again leave the filter running. Then let it settle and spray.
If something goes wrong and I get some dust, you can't see it, just feel it. If you're rubbing down to dull the finish, it'll come right off anyhow. Otherwise a little waxing also takes care of it.