I once read a theory that this is how dragons - a creature so many cultures have myths of - could've actually existed. The theory further speculated that some of the dinosaurs which had the hollow horn on the back of their head could have had separate reservoirs of chemicals in those horns just as the bombardier beetle has and could then blow them through their nostrils to combine in volatility as ejected. No idea if there's more evidence than theory and the bombardier beetle, but it was a very interesting thought.