Trust me, not everything is a false positive. I had to format my PC about a month ago now due to a virus taking over my PC, it would not allow me into the control panel etc etc, hell I could not even change screen savers if I wanted to.
You do have hackers and phreakers that release games, that can access your PC if they so wish, some games are not even working games, just ways to get into your PC.
You put up a fake file, even just a so called crack for Sim City as an example, the crack does not work on the game, so you think stupid crack, does not even work and you have just given access to your PC away.
I do not bother with running virus checkers any more, as a waste of time. I have run Norton and it found no viruses, I than run AVG and it found viruses. You also have in the wild viruses, which are put on your PC via trojans, that virus checkers do not know about, and they can activate any time the hacker has remote access.
I have twenty years PC experience, both building and running my own IT business, teaching IT at one stage for my level 3 in IT. I have also done a bit of H&P in the past, all be it a script kiddie, so I know how most of it works, or used to, things have moved on since I last dabbled.
So don't believe that these are just false positives, as one day one of them will take over your PC.
Emulation is safe, warez not so. I do not even trust that Teknoparrot as that throws up a lot of warnings as well.
Regards
Mark