HAHAHAH.. you really love your germ theory religion fairy tale... naturopaths/herbalists, just like medical LOVE it because they can scare the sheeple so they can sell their products for forever.
I guarantee you that puss was actually heavy metals that the body was trying to isolate in a sack(tumour/puss).. sterilizers are base don heavy metals, cow feed/cow vaccines/cow water/cow medicine/pesticides/herbisides/insecticides are all based on heavy metals...
The body creates solvents/soaps, which medical named 'virus' to try to detox these heavy metals... the body also sends other micro organisms such as baceteria, mold, fungus, yeast to try to break down heavy metals.
Are fire fighters the cause of fires? Are janitors, garbage collectors the cause of garbage?
What that con artist smelled was the stench heavy metal overload the cow accumulated. When humans detox, they smell too, since heavy metals stink, each metal got a colour and smell to them.
Nice try though promoting the satanic religion of germ theory. Notice it is still an UNPROVEN THEORY.