VBA to Close Workbook if BOTH Workbook is inactive and VBA is Not Open

I have been searching high and low, but apparently nobody else has this need. I built an excel file for the department at my company that is accessed frequently by a few users. The file is still currently in development, so I need to regularly access the file for updates/maintanance. I am the only one that ever does any work in VBA, but the other users are notorious for opening the file and leaving their desk for hours at a time. I know how to implement an auto close/save routine if X amount of time has passed, however, it will still close even if I am working in VBA, which I, obviously, don't want. Any suggestions?

Another option I considered was implementing an

If VBA = False then
    'Start Timer Code
End if

But I don't know the correct syntax (if it exists) to do that and I have had no luck finding any threads that detail how to tell if VBA is open or not.

Thanks.

EDIT: Figured out a work around. I added this if statement:

If Application.UserName <> "my UserName" Then
    'Start Timer Code
End If