from Merriam-Webster online…
Breath
5- : a spoken sound : utterance
Breathes
3- a (obsolete) : to emit a fragrance or aura b : to become perceptible : be
expressed
transitive senses
1- a : to send out by exhaling b : to instill by or as if by breathing
5- b : to make manifest :
In such context, it would be very easy for a lung to BREATH doubt. Giving J’s lyrical tact, this would be a very effective use of the word "breath" combined with the use of the word "lung" for extraordinary effect.
ex) no way to break the hand, gives a doubt to everyone 