The bad smell your talking about in Fox Farm soils...
The garbage smell your talking about, happens when the bags get wet, either in transit or by storage practices at the places you buy them at... Been using OF for many years from the hydro shop, who carefully stores their bags, in the next town over and recently my local hardware store started carrying OF. When I bought it from them one time recently, I certainly noticed the smell. It's like old garbage with a strong musty smell with it. Didn't really know what it was, but made me think it had gotten wet or something. One day when I bought it from the hardware store, it was raining and my bag was wet when they handed it to me. I asked them where they stored it, they said it sits right outside behind the shop. I asked to see and they let me. I told them they had to store the soil so it won't get wet or it could leach good stuff out and/or bad stuff in. They since moved the pallet under an over hang and waited about 6 months before getting another bag from them hoping that that pallet sold already lol. Ever since then, it smells fine and had no issues. Stay lifted.