Thanks Phill ... always nice sage advice.
I think hubs is looking at venting into charcoal and carry it away underground pvc piping at the moment. I've put it in his hands.
His concern ... we have neighbors who sit out on their decks and though they are to the side by 20+ feet from any venting I would be doing ... he doesn't want to throw carcinogens at them. Also ... having our four legged friends running though my off gas drop-off.
I've tried to tell him as you said ... it's minimum you just don't want to collect it inside and be breathing it ... he's hell bent on some type of filtration.
I've put it in his hands. We live less than 15 miles from Three Mile Island so we are "used" to be contaminated.