Volumetric Fog is an effect of the HOG Tool which can be used within your Environment Effects. Decide yourself how the effect will look in the end. Set up the color, the density, the spread area of the fog and its height. The parameters of this effect will not limit you to use a simple fog effect. Use it for a thick and opaque fog, a cloud effect of the sky, steam of water or create a whole new use case.
Volumetric Fog