Geo_Modifier This compound will analyze and break down a geometry into individual faces with enough information to reconstruct the geometry. https://forums.autodesk.com/t5/bifrost-forum/geo-modifier/td-p/9172328
Voxelizes the input geometry and reconstructs it using the contour_dual_marching_cube algorithm. Use this to quickly rebuild invalid geometry (such as those with n-gons, holes, lamina faces, and nonmanifold geometry) into valid geometry.
The compound node takes two geometries as inputs and outputs a colored geometry that shows where the two inputs are different. This works in realtime for geometries up to 300k polygons. There's a description in the Maya blog "Compare Geometries".
This Smoke Simulation is having Modified Vary Source Property node to have a more varied looking emission and added initial velocity with curl noise to get more interesting looking shapes and in general to get a detailed looking simulation.