Thanks everyone.

I don't have anything that I cannot throw right into the wash, so I never knew how to take care of different fabrics. I'll soak it in cold water tonight and set it outside on my porch this week. I don't have a place that I can line dry it, although I guess I could hang it in one of my bathrooms and turn a fan on it. If I go for the porch treatment, it won't get a direct breeze, due to the way it is built on the apartment, but once again, there is the fan idea. Thanks everyone!

Now, should I use any soap, or just only water?