According to the documentation: Application.Quit does the same thing as DoCmd.Quit. Namely
The Quit method quits Microsoft Access. You can select one of several
options for saving a database object before quitting.
You can try calling either of them with the parameter acQuitSaveNone
or 2 which "Quits Microsoft Access without saving any objects". Upon further review, use Application.Quit
as DoCmd.Quit
was added for backward compatibility for Access 95 (See remarks for Quit Method as it applies to the DoCmd object.) Doing either of these should still do an automatic compact on close if you have the permissions, which may be the cause of you shells.
If that doesn't work for you, here is a somewhat extreme suggestion. Save this as a vbscript file and call it once you're truly done with Access. This will terminate all MSAccess processes on your windows pc, without compacting and repairing.
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colProcessList = objWMIService.ExecQuery _
("SELECT * FROM Win32_Process WHERE Name = 'msaccess.exe'")
For Each objProcess in colProcessList
objProcess.Terminate()
Next
To call the script replacing [vbspath] with the actual path. If the path has spaces make sure to use double quotes and put it in quotes:
shell "cscript [vbspath]"