We use A diluted version of kennelsol at the animal ER I work at for disinfectant, contact time plays a large part; usually let cages and surfaces soak for at least 5-10 minutes before wiping it out. It even kills Parvo virus, I don't see why it wouldn't work with surfaces that have been contaminated with chicken upper respitory infections. Though I don't know how the chickens would react to it (birds can be a lot more sensitive than cats and dogs) though once you wipe it after letting it sit it's never posed a threat to any animal I know of. Nor does it have fumes, we even mop with a diluted form and hot water as well.
Probably.....but if there are still chickens around that were exposed to the illness,
they are likely still carrying it and disinfecting the coop is kind of moot.