The answer is (relatively) simple, but is also significantly expensive. To control odours which are being emitted from your stack, you will need to add a series of filters and percipitators. This will remove the particles of paint and solvent from the exhaust gases.
If you are dealing with a complaint from a 'neighbour' this will NOT solve the problem. Airborne emissions come from everywhere in your plant, and removing the exhaust gas component is only a portion of it.