Nerd3d had a smoke tool over at Daz3d. Jepe has some smoke panels (sort of 1 dimensional panes with smoke). And there's these 2 here

http://www.renderosity.com/mod/bcs/natural-smoke/21849

http://www.renderosity.com/mod/bcs/pipe-and-smoke/73099

The dust settled, thinking "what a fine home, at least for now" not realizing that doom would soon be coming in the form of a vacuum cleaner.