How can I eliminate an odor in an unvented bathroom?

Question

I have a very small bathroom in my office. The said bathroom is unventilated. Obviously it leads to a foul smell in the bathroom. Please suggest to me some method by which the foul smell can be eliminated.

Answer 1

1. Install a fan vented to the outside
2. Install a fan with a carbon filter that recirculates air
3. Spray a deordorizer/fragrance
4. Put a clothes-pin over your nose
5. Eat foods that result to less foul smelling bowel movements
6. Close the door and hope for the best