House of the Dragon: if dragons were real, how might fire-breathing work?

[Still Waters]

Quote

In George R.R. Martin’s fantastical land of Westeros in Game of Thrones and House of the Dragon, the spectacle of dragons breathing fire captivates his audience through a blend of myth and fantasy. For me at least, there’s also scientific curiosity.

The images of dragons unleashing torrents of flames on the new series of House of the Dragon got me thinking: if dragons existed, what real-world biological mechanisms and chemical reactions might they use?

But first, a chemistry recap. To ignite and sustain a flame, we need three components; a fuel, an oxidising agent - typically the oxygen in the air - and a heat source to initiate and maintain combustion.

https://theconversation.com/house-of-the-dragon-if-dragons-were-real-how-might-fire-breathing-work-232777

[fred_mc]

I remember seeing a made up documentary some years ago where they found dragon bones in a cave. In it, they also made up an explanation how they could breathe fire.

[OpenMindedSceptic]

Why not just stomach (hydrochloric) acid and calcium from bones in sufficient amounts as well as forced under pressure through the oesophagus and cranium and hey presto... hydrogen explosion 

[Montello]

some dynasoraus flying yes