[SOLVED] Information on what could happen if a hardware component is "touched" with hands while it is fully on

Aug 31, 2020
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Hi guys,
first of all I would like to thank you in advance for your answer and I would like to point out from the beginning that I want to apologize for the question if it may be a little "trivial".
So, as I described from the title I was wondering what could happen (in the worst case) to a component if it is touched with hands on its PCB or, in my specific case on a three pin connector of case fan control while the PC fully turned on? Is there a possibility of having any short circuit in your opinion? Is there any possibility of damaging anything?

Thanks again for your reply,
Simone