Resin Fumes

If you were going to make a duct system to pull Resin fumes out of your room do you place the vent high or low. In other words do resin fumes rise or fall?

I believe the bad stuff settles around knee high.

yeah, i heard they stay close to the ground

I worked in the boat industry for awhile and in the room where they glassed the exhaust system was from the floor to 3/4 up one wall. Nothing overhead. Frank