This is about using dogs to help with diagnosis. Anything the medical staff would learn from the dogs would still be covered under doctor-patient confidentialit

This is about using dogs to help with diagnosis. Anything the medical staff would learn from the dogs would still be covered under doctor-patient confidentiality. Training dogs to help could provide cheaper, more accurate tests that are less invasive and less painful for patients. This has nothing to do with "hassling" you. I'd be more concerned with the ethics of using dogs for COVID-19 detection given that dogs are susceptible to SARS-CoV-2 infection.