My vet made me sign a waiver saying I'd never eat the eggs or meat, but off the record said it was that they themselves wait one month.
-Kathy
Welcome to BYC!
Not all respiratory infections or bacteria found in the mucus are Coryza, MG or MS, lots of other things it could be, so this bird might not be a carrier. Did the vet say if it was a gram negative or gram positive infection?
-Kathy
Probably not, but catch him and check anyway, it's easy to rule out, right? While you have him caught, do thorough exam... look in mouth, eye, ears, check for smells, too. Also check for mites and lice.
-Kathy