What is evil? Simply put, evil spirits enter the human body to form diseases. Will it conduct electricity? I don't know, but personally, I think it will be spread. Whether it is exogenous six evils or internal seven emotions, when the disease occurs, it is a process of struggle between good and evil, which not only occurs in individuals, but also is influenced by the outside world. When exogenous pathogens are vigorous and healthy, it will lead to the deterioration of the disease; When patients with strong pathogenic factors come into contact with normal people and healthy qi is weak, why can't they transmit pathogenic factors to normal people?
I once heard Xu Wenbing talk about Synopsis of the Golden Chamber, saying that pathogenic factors can be contagious. Sick qi is a kind of energy and an atmosphere. It is not a matter, but an influence on people's spirit, mood and feelings. If the doctor's energy overwhelms the patient, then the patient can be cured.
Why am I so curious about "pathogenic qi"? Because it happens to me all the time. Sometimes after receiving some patients with shoulder pain, shoulder pain will appear. Recently, I received some patients with low back pain, and my own back began to hurt. Sometimes I feel helpless and want to help others solve their pain, but I am awakened by pain in the middle of the night but there is nothing I can do.
Buddha said that everything has a cause and effect. Does the doctor's treatment interfere with causality? I don't know. If the occupation of saving lives and doing good deeds is disturbed by "illness", you can only blame yourself for being too superficial!