the problem is that you can't wash/dry your symthetics hot enough to kill the bacteria or the fabric will melt. so you have to do something else to kill off the odor-causing bacteria.
try 1) soaking it with rubbing alcohol or Lysol
2) put it in a plastic bag so it doesn't stink up the freezer and freeze it for a week
3) after washing it, don't airdry it inside but line dry it in a sunny spot for a few days and see if the bright UV will help
4) microwave it and kill off the little bastard bacteria that way
5) if microwaves won't work, try an X ray machine, like at your dentist office.
6) go to hanford and nuke the fucker with some gamma rays!
Because one of the moderators of Access Issues power bolts in wilderness areas and hence might be in favour of the proposed changes, but doesn't moderate Spray?