My small magic mushrooms its small animation with a 3ds Max. For the rendering is used Vray. I made the dust with After Effects snow particle.

I renered small animation and you can see by Youtube here :
https://www.youtube.com/watch?v=aHxJaFX_HNo

You can see more works from my at ArtStation at this link : https://www.artstation.com/tosheto

I will be happy of your comments
Wish you a nice day