don't know from experience but I wonder if baking soda, hydrogen peroxide, and a small amount of dish soap would do.   same formula we've used on the dog when she gets skunked.  my brother had an old beat up tarp with that vomit smell. i soaked it in a bleach solution which did not help. didn't think to try the skunk solution. threw the old tarp out

I had a similar problem with a nylon t-shirt.  I used a spray bottle of something called Power House Fabric Refresher.  It works great and doesn't harm the fabric.