invisiblemimsy
Our ability to make fire?
This is relevant. A myth in which dragons created fire?
Yesish... Taught us to make fire? A myth in which we created fire? Fire itself?
The myth is none of these things exactly.We were dragons?
In a sense... Body part of dragons? We were dragons' eggs? Magic? Ability?
An ability of theirs, yes. Ability to fly? Earth Air Fire Water Spirit relevant?
Just fire, alas no Captain today. 
My breath after a late night curry?
Haha good guess but no.trebor
Were dragons metaphorical stand-ins for people?
In this specific capacity, yes. Like for enemies in battle?
YES. Have they gotten anthropomorphized?
Yesish, in that they are taking on a human characteristic...