How to have some volumetric scattering form a mesh that emits light ?


I’ve been working on the Blender->Substance->UE4 Workflow on the past few days and I would like to know if there were any way that a mesh, in UE4, could cast some light throught volumetric scatterring.

As you can see in the screenshot ( I have some volumetric scattering on spotlight in the background.
But my meshes , the sign “EN”, don’t have any.

Is volumetric scattering for meshes impossible?