I found something very similar to this. Fine white hairs, unlike web strands in that it is irregularly wavy, and not elastic.
I have hunted for signs of pests with magnifying glass, with nothing to show. No leaf bites, no dots under leaf. I was mystified by the silky material.
I collected enough to find that it burns like plastic, and I spotted the source. The outer filter on my inline filter is made of these fibers. I added it during early flowering, when the smell started becoming noticeable. It’s possible that I will find more embedded in the buds later, as they grow around the fibers.