Hello, I understand your concern. I am Dr. Arun Tank, infectious diseases specialist, answering your query. In my opinion you should visit him without fear. Pneumonia can transmit by air droplets, but it can set only in person who is compromised his mobulity or has sum lung problems previously. e.g. in your case your husband has done spinal surgery and has COPD. As you are of good physics, nothing is going to happen to you. You can visit fearless. You can apply mask to your face while visit, it has ni harm in doing this. This has no harm any way for doing this. You can also wash your hand before and after the visit to the hospital. It not only prevent you but also prevents your husband also. I will be happy to answer your further concern, you can ask me on bit.ly/DrArun. Thank you. Dr Arun Tank Infectious diseases specialist.