A friend has a 10 year old golden retriever she wants to put to sleep. The dog cannot stand on his own, has black goop coming out of his eyes, is coughing, is drooling gross drool and has no energy. She has not done any testing to see what exactly is wrong. She has asked me to help her carry dog from house into truck to transport to the vet. Can I possibly get sick by doing that if she doesn’t know exactly what is wrong with dog by handling dog? Is that something only the vet should do?