How ever, for the Agent.PGV virus can be stopped from infecting your pendrive from a system already infected with that virus.

You need to first prepare your pendrive on a clean pc.

open the pendrive root folder
create a directory RECYCLER
copy c:\windows\system32\calc.exe into that directory
rename the exe file to autorun.exe
Make the file read only

This will fool the virus that the system is already infected
and will not be infected again.

The autorun.inf file may be created when you insert it on an
infected pc.

But the virus will not be infected