Recommended offline on-demand virus scanners
I'm looking for an unintrusive antivirus program that I can get to run scans on suspicious objects on demand and only on demand. Most other antivirus programs install many layers of protection and things running in the background and preform regular updates and system scans at inconvenient times.
I want an antivirus program that I can simply right click and object and select "scan for viruses" and nothing more. Is there a reliable antivirus program out there that offers this and only this without the automatic updates, background processes, and intrusive automatic system scans?
Note: this is for Windows.