This is a smoke layer from "Wispy Smoke" Fluids page before composited. Fluids was emitted from Fluid Emitters that were attached to a set of plane objects. High swirl value, low turbulence and Damping setup. Fluids's density was Keyframed and cycle animated to breakup the look of smoke. Used Texture Map to emit density by Noise's texture time on the Density Emission Map to get variety smoke shapes. Rendered using Mental Ray at Final Resolution of 350.