Burned!

The rule of thumb for anyone whose clothing has caught fire is to stop, drop, and roll. Smother flames with a blanket or sleeping bag.

“Eliminating the source” also means you must instantly remove burned clothing, except for bits of cloth that adhere to the burn itself. Remove watches and jewelry that can retain heat.

Boiling water spilled onto wool pants, polypropylene underwear, or inside boots can cause severe burns from heat retention.

Fleece jackets… will melt from contact with flames and sear into the skin underneath them.

Source: “Burned!”, Field & Stream Aug 1997