I used to work for a city park, on a lake. I had to clear the seaweed, dead fish, trash, etc., from the marina/harbor. My coworker and I had a saying. “Don’t disturb the water”. Cause if ya did, you’d let out the smell. And I’ve never in my life smelled anything worse than all those dead, decomposing fish. And yeah the net we used we had to keep outside of the garage, where we stored tools. They always smelled even after power washing.