I used to vent my motorcycle spray setup with one of these "in reverse." Meaning that I would remove the bag and instead put an air filter on the intake side, and then a hose on the output side to route clean air into the shop. Keep the blower outside and away from the fumes.

It's like $99.

[EDIT / WARNING: Don't use any fan where the motor is directly exposed to the fumes, such as a regular house fan!]