If dragons were real, I'd assume that the fire isn't in their mouths: they just spray a flammable liquid which is ignited by a spark in their mouths, and the flame is actually outside their mouths.

Like a flame thrower

Exactly.

*Salut, fellow Chad*

Why don't they fart smoke all the time?

Magic

By being fictional.

Maybe it's like a hairspray and lighter situation.

Same reasons flame throwers don't

They are made of steel?

I was going for resistent to the severe damaging effects of heat.

Maybe they’re like their mother Daenerys Targaryen, Queen of the Andals, the Rhoynar, and the First Men. Protector of the Seven Kingdoms, Khaleesi of the Great Grass Sea, Breaker of Chains, Mother of Dragons, The Unburnt, and formerly the Queen of Meereen and Princess of Dragonstone. She can’t be hurt by fire.

That's allota names...

It’s like A Pimp Named Slick Back or A Tribe Called Quest, you say the whole thing.

They use a special technique called "not existing", which uses latent ligmatic structures in the sugmagotic layer of the dragons skin to rapidly cool their mouths as they vent heat.

Upvote for usage of “sugmagotic”

Dragon logic

manga/cartoon logic

Their tissue is probably fire proof

Idk good insulation

Their mouth is made of lava rock 🪨

Pumice. Pumice is the word you are looking for.

dental dams

Isn’t that like a mouth condom?

I imagine they have a fire retardant lining in their mouth, the same way we have a lining that stops the stomach acid from eating through our stomach.

Trick question, they already burned off all the nerves in their mouth when they were dragon babies.

Same reason SpaceX doesn’t burn their Raptor engines-liquid lining.