Mine is as simple as simple gets. I took a 1/2" hose draining from the collection cup and the hose empties right into an open 5g bucket. I did not want to overly complicate that unnecessarily, but I have seen all kinds fo design for it with lids on and carbon chambers for the air exit. I want to see the level on the bucket, and since it is in my garage where it gets tons of air exchange, I don't care about smells. Mine never smells.