Quote: "Hmm... maybe this idea wasn't a good one... "
Well, aside from the technical dificulties with actually downloading a smell and assemble it, it would depend on the application. For example, in games like Bioshock, would you really like to smell the corpses? Or in Left 4 Dead, I for one would never want to smell how it smells after a Boomer has vomidated all over me, lol. And I know these are not downloading smells, but rather about the assemble process. Anyway, I am sure someone might come up with an constructive idea not involving poo... maybe. Some people never leave that age, you know

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So, personally, I cannot see any use for it, but that does not mean there won´t be any in the future.
There is no greater virtue, then the ability to face oneself.