I'll change no one's opinion, but just for fun...

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It does to some degree depend upon what you mean by "worked."

Try this:

Take some ammonia and put it in a film container. Cover it with ordinary cotton cloth and take a big wiff.

Next cover it with a piece of carbon-laced material and do the same...and then tell me there is zero difference.

I do not think that you can "eliminate" all human scent with a garment of any type, period. But I do think that human scent is like a radio playing in the woods. You cannot turn it off, but you can most certainly turn it down.