I lost most of my prep stuff in the Midwest floods this summer. One thing I tried to salvage was my stuff sacks. These were exposed to flood water as well as sewage back up.

A couple of nights ago, I tried washing them per manufacturer's instructions, but after washing and drying they still smell like flood water.

These are mostly Granite Gear stuff sacks and Granite Gear Ultra Light stuff sacks.

Any suggestions for getting rid of the smell? Is it even possible?

I also had a couple of AMK Heatsheet Bivys and Heatsheets that were in the flood. Any hope for them?