There’s a product called “Fogscreen.” Fogscreen is basically a sheet of atmospheric that is jetted downwards so that a projector or other fixture can project onto the screen. You can walk through it. Great, right?
The thing is – this actually works really well. I was amazed at how clear and bright the projected image was on the fog screen. Check it out. Also, check out Fog Screen (http://www.fogscreen.com).