apparatus for the removal of noxious material from a contaminated gas stream comprising a lower portion having a liquid reservoir with means for receiving a contaminated gas above the level of said liquid and a substantially vertical elongated duct positioned centrally above said liquid level , a central portion containing fan means positioned in axial alignment above said duct , the operation of said fan means causing an upwardly spiraling vortex of contaminated gases and atomized liquid from the liquid reservoir through said duct and fan means thereby intimately admixing the contaminated gas and atomized liquid and an upper portion through which purified gases exit and wherein the atomized liquid containing said contaminants is coalesced and flows downwardly by gravity to said liquid reservoir .