I think that the question now is simply: "What geometry would one use to represent the shape of the spray?" because obviously this simple cone shape is not realistic.
We are posting the model here for your testing pleasure (pro users).
If you are running short tests you may want to hide the sky portal and render with Easy Low.
This image attached is rendered with Sky Portal on and Easy 09 render setting. (contrast boost in post pro)
Mike inspired the question here of how one would represent the spray of water from a shower.
Subject: Student apartment, shower test.