...I experienced this recently while at volunteering :(
There was this one guy who had such a monotone boring voice and just talking to him just took so much effort to talk to him and it was just awkward sitting there trying to look away from him and do what I was doing while all the time just saying "PLEASE LEAVE ME ALONE" in my head. It was terrible. There was another guy, but he wasn't as bad, both were useful at times though BUT WOW so boring.
Sometimes I just want everyone in general to leave me alone, though.