Additionally, the ingestion of a used tampon would not be a common route of transmission for herpes, as the virus is primarily transmitted through direct contact with infected lesions or bodily fluids. Even if the ferret had come into direct contact with the infected material on the tampon, the likelihood of transmission would still be very low.
The infection on the ferret's ear is likely caused by a different underlying medical condition and should be evaluated by a veterinarian. It is important to note that self-diagnosis and treatment of medical conditions in animals can be dangerous, so consulting a qualified veterinarian is crucial for accurate diagnosis and appropriate treatment.