The Odor-Vac is an attachment that can easily be added to an existing toilet to extract odor from the toilet bowl as the user relieves oneself The odor in the toilet is extracted via a fan mounted over a hole in the wall behind the toilet through perforated hoses placed under the toilet seat and connected to the fan housing on the wall. One of the unique features of this invention is that, unlike most other inventions patented to accomplish this task, this attachment can be sold to the general public, who can attach to existing toilets using common tools and skills.