I generally whip my ropes and cordage by melting the cut tips, so I know that hot, melting nylon is hot and nasty, not the thing you want in contact with one's delicate skin, but...

Killers? If things are hot enough to melt nylon, I would think the victim has even bigger problems. Are there documented cases of deaths caused only by melting synthetics- no other contributing conditions (like scorched lungs?)?

I can see the point when flying, especially with undergarments. But then, I find flying less and less satisfactory or cost effective, even if I can keep my shoes on for TSA.