Dr. Dann had zero experience with this breed, the Elf cat, similar to a Sphynx but it has hard rigid cartilage forming a curved ear. Dr. Dann said the ears must be unhealthy because of the thick cartilage. A good vet would have taken a little time to learn about the breed before carelessly diagnosing.
He then said the ears were impacted with wax. (No antibiotics needed, just an ear flush.)
Secondly, the cat had sneezed while it was at the vet. The cat had a bit of a runny nose. This is not uncommon for a cat that has faced stressful experiences.
Dr. Dann told the new owner there was no way he could guarantee that the cat wouldn't face a life of respiratory problems. NO ONE can ever guarantee the health of anything, whether a human or animal. That was the only thing he could share with his client, no testing, no real diagnosis. He then told her she should return the cat if she didn't want to pay for the ear cleaning or future care should the cat end up with a respiratory problem.