Hi, everyone new and old, I just bought HOKE's book read the first 130 pages, Hoke say's one way too contain your fumes is too place a plastic or glass dish about 2 inches deep. Put 1 inch or so of water in the dish, place your container material will be disolved in, in the dish,take another container LARGE ENOUGH too cover disolving dish -YET will set inside the dish containing the water, Placing this container over the reaction vessel and in the water the fumes are trapped in the water which can be neutralized and disposed of.