Out side airing, oxy clean and vinegar. A good wash with some regular strong detergent might take care of it too and then wash it again with the hypoallergenic detergent and rinse with vinegar, fabric softener slot, to get any residual soap out. If it is still stinky I do not use it. I smell everything too. You might also find it is just one piece of fabric and not the whole load that makes it stinky.