I do not know what country you live in, but in the U.S. there is a product called Odo-Ban. You put it in the rinse cycle of your laundry and it removes unwanted odors. I have used this product and know for a fact that it works. If you don't have access to this, you could try using plain baking soda in addition to your regular detergent in the wash, and also in the rinse cycle of the laundry and that can also help. Good luck.