Is there a way to project smell?

Question: Is there a way to project smell!?

I'm working on an installation piece and I was wondering if there was a device I could use that would allow me to spread a specific smell around a medium sized classroom!. I want to project an earthy/dirt smell and I suppose I could just put a nylon of dirt in front of a fan but is there a more sophisticated way to do this!?Www@QuestionHome@Com

Best Answer - Chosen by Asker:

Scratch and sniff would be fun, but probably not feasible!. If you don't want a fan blowing air around, maybe you could use heat, like a pan-of-mud-on-a-radiator kind of thing, if humidity wouldn't be an issue!. Patchouli oil smells kind of dirty to some people too!. Hand out paper cups and topsoil!?
For a professional system, look at http://www!.scentair!.com/products/index!.p!.!.!.
Good luck :)
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