OT: I have witnessed an IT company's chef cook answering phones and telling people if the green light is on everything's alright. Those kind of individuals are everywhere
Off topic, it is almost impossible to get infected by anything unless you do something stupid yourself. This doesn't apply if you are specifically targeted by person/people that are interested in bringing your computer down or similar. But for that, you need to be someone of importance to those people. I don't fall into that category. But if I did, I'm quite sure even if I unplug my PC, or have 73 anti virus software at the same time, my chances would be slim.
Mainstream viruses that target anyone requires something stupid to be done by the person in charge of the "target" pc.