Bacteria, and Fungi that are good for plants, are not necessarily good for human beings. Soil contains all sorts of fungi/bacteria that could KILL an immune compromised person. (Eg: People with aids, people who have recently received organ transplants, or had certain surgeries.)
Some of the most common bacteria/fungi in animal feces & soil (even composted) are E coli, salmonella, anthrax, and many more. Those with healthy immune systems will generally be fine, even when exposed to these, but someone without a healthy immune system -- not so much. The bacterial spores do not absorb into the plant.. they simply spread their spores everywhere, and the spores cling on to every part of the plant. The stems, leaves, buds, everything. Most spores can even survive being burned. So; they can end up in people's lungs.
My father actually almost died to e-coli. It was a rare type that spread to his spinal cord. It took the CDC doctors over a year to cure him.He was healthy when he got it.. so just imagine a sick person getting infected. Not cool. Especially if we are growing medicine for people. It's completely unethical to overlook something like this, no matter the reasoning. Anyone involved with growing, and selling medicinal herbs must uphold the highest of ethics when It comes to their products.
PS. I'm not trying to argue with you; just converse.
