This is a bit untrue. PPE is for your "personal" protection. When I am drilling out a filling on a patient I am not wearing that mask to keep my germs from getting into the patient's mouth. I am wearing it to keep physical matter and debris from getting into my nose and mouth.
If we are talking about doing surgery in a sterile environment it is a bit different. However, surgical masks do not stop airborne pathogens from escaping around the surgeons mask and getting into the operatory. They do keep saliva and large water droplets from getting into the surgical site.
...exactly what I've explained several times before. But for some reason, Foszoe seems to be intentionally obfuscating and exercising reductio ab adsurdum.