How can you remove mildew from wooden shelves?

I live in a pretty cheaply made apartment. I have a great linen closet that I can't use because it reeks of mildew. I can't even put toilet paper in there because it absorbs the smell. The landlord won't do anything about it. How I can I get rid of the smell? It seems like it is only on one shelf... show more I live in a pretty cheaply made apartment. I have a great linen closet that I can't use because it reeks of mildew. I can't even put toilet paper in there because it absorbs the smell. The landlord won't do anything about it. How I can I get rid of the smell? It seems like it is only on one shelf but the shelf can't be removed. Any ideas?
Update: They are unfinished particle board. Very cheap.
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