Toon Explosion 1:

Toon Explosion 2:

How It works?

Creating Smoke

Volumes allow you to store values for "voxels" (three dimensional pixels) in a space. This allows you to represent phenomena such as clouds, smoke, fire

first we should create a smoke

Convert VDB

Convert VDB geometry node. This node converts sparse volumes, or VDBs, into other types. It provides some extra options not available through the Convert SOP. This also allows the conversion of volumes into VDBs.

Toon Shading