Many plant diseases aren't compatible with humans, but if you aren't sure, then Don't eat them. I would advise curing the soil, and plants first. My method is safe, and can be used anytime as often as you like. Both, soil priming, and spraying are important. If you don't have all of the oil extracts, then it will be ok. The more of them you can obtain, the better it will do. A little goes a long way with this. The recipe is as follows:
First, you will want to prime the soil with dolomitic lime, then spread wettable sulfur to Kill off any infection in the soil. I Also like to spray the plant itself. Mix a few drops of one or more of these ingredients into warm water with a spoonful of coconut oil: Rosemary oil, lavender oil, neem oil, garlic oil, cinnamon extract/oil and for really bad cases, also add clove oil.