Why do coins smell funny after you touch them?

They never have an odor before handling them, but once you grab them or touch them, they have that weird metallic scent.

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Groofydorkgerdo · 56-60, M

I think its an eletrical thing.
The salt and sweat in our hands along with our own minute eletrical. energy excites the zinc snd copper found in many coins.
Not to mention our hand anf their moisture heat the couns up a bit.