Managing airflow with a paint booth is critical in achieving a consistent paint finish. Poor airflow can cause blisters, since the top of the surface starts drying faster than the paint beneath it, forcing solvents to escape from the paint. Likewise, a proper booth also filters out dust, bugs, and other impurities from the air that could end up on your paint. Laws vary by state, but painting a car outside of a proper booth can result in fines of tens of thousands of dollars. "Either don't do it, or don't get caught," Austin quips.