JerryW, I'm no expert so take this as just one data point.
I've noticed the same thing, but also with my hammock body itself, some fabrics moreso than others.
I've put my stuff in the washer on gentle, and in the dryer on minimum heat with some dryer sheets
. The odor subsided somewhat, though not as much as I'd anticipated. How well it will work after repeated washings remains to be seen.
I'll be interested in the responses this gets.