I had this happen when I was relighting a wood stove in our house.
I used lighter fluid in the hot stove. I lit a long wooden match and the fireball came when I stuck the match in the stove. I singed my eyebrows, some of my stash, a little head hair, and some of my arm and leg hair.
My wife said I was engulfed by fire.
I hope this guy got away with just some singed hair and light burns. Hopefully he just got ash in his eyes.
I haven't lit a wood stove like that since then.