[PizzaPolice]

Wow! This is so crazy that I had to weigh in. I must first post this question on behalf of the regular folks here. WHY?
Ok. Now that that is out of the way, let's dream. Chances are you do not have some humongous 180 foot stack fitted with powerful blowers that is ripe for installation of scrubbers and precipitators. I'm guessing you have a normal 4-6 foot chimney like the rest of us. If I were on one of those cable shows where tree huggers attempt to save the environment, I would do this. Leave the natural flow alone and augment it with a commercial chimney blower. The flue gases would be directed into a chamber situated away from the chimney. There, you could conduct all manner of wizardry, witchie-poo and wetness without losing the integrity of your WFO. So there. I said it.