If those items are anything like pantyhose (synthetic made of oil products), one pair of pantyhose on fire puts off enough cyanide to kill at least 8 adults in an average room.
When I went into a house that had a fire in it without protection (SCBA, etc.) to make sure one of my friends could get out of the house, both she and I inhaled too much of the toxic fumes from a burning speciality chair-like pillow that was on fire and we were downstairs while the fire was upstairs.
Now we both have quite a time with asthma.
Everything is made of plastic/oil these days. Burning Poly-Vinyl Chlordes (PVC's) are especially deadly. When mixed with water and heat they generate chlorine gas. Nothing rips apart alveoli faster than a lungful of chlorine gas. I tend to be very careful around fires at work.