"it is more than reasonable to study Brilacidin as an inhaled therapeutic."
DeGrado's comment was about its use as a prophylactic:
"developing Brilacidin for potential prophylactic use by targeting the nasal passageway and lungs may be a particularly appealing clinical pathway"
That's never going to happen.
Besides, inhaled insulin was a massive commercial failure.
And an inhaler that causes hypertension and (allegedly mild) peripheral neuropathy is likely to have an even tougher time.
Even if it worked, and that has to be in question now.
The effect on viral load from the brilacidin study will tell us - if the information is ever released - if, as I suspect, the in vitro effect doesn't translate into in vivo activity.