In the area I live and work, viruses in outdated and pirated windows systems are absolutely rampant. (Moreso even than in the "normal" world). It's utter madness to plug in a USB drive anywhere. Almost 100% infection instant USB rate anywhere public.
Unforunately, I have to work with a lot of files with MS Office documents transferred by USB from students, which are generally equally as virus ridden. I know for a fact several of the Excel files I've gotten have contained VB macro viruses.
I have some concern about opening these even on a Linux machine, but it's unavoidable.
Is there any reason for concern that VB macro type viruses could infect a Linux machine using OpenOffice?