Hey Guys,
Not sure where to post this.
I have been working with the smoke sim for the past month.
I thought I would pack them all in a file for quick use for others.
I also created a material to control the smoke a little better.
Just append the scene you want and then copy/paste into your scene.
https://dl.dropboxusercontent.com/u/23859364/Pollution.zip
Hope this helps.