I've looked into it a bit, but haven't come up with a viable solution yet.
That might tend to blow dust onto the surfaces rather than draw out the vapors. The vapors are one issue and the other is to prevent airborne dust from entering the booth from the rest of the shop, so it should be sealed off from that space. The commercial spay booths I've seen do not draw air from the rest of the shop area, but have their own inlet and exhaust and have air tight doors. Other ways may work OK, I donno?I've been considering using one of those pop up tents and attaching clear plastic to the sides....so any reason it couldn't have a small fan on the intake side instead of the exhaust side to negate the need for an explosion proof fan ?