Hello and thank you for your lengthy response
I know my wiping cloths aren't carrying bacteria or spores. I do stick to changing cloths while wiping down leaves and always use a sprayer to moisten the cloths as well. When I'm done, they go in the rag bin to run through the laundry. I'm highly sensitive to chemicals so my laundry gets a final rinse with vinegar to remove all residues and tannins and in place of fabric softener.
I actually saw the grower on Friday, and it turns out what I had was mildew from not enough air circulation, which doesn't damage the plants when controlled. I've added small fans to all the areas where my plants are now. and so far so good!
I'm actually using the garlic for the natural auxins which have been shown to promote cellular division to promote blooms and root growth. I've found that my plants really perk up after they've been fed with a tonic of garlic and distilled water. Not that they were drooping before, they just look super perky for a day or two afterwards.