this summer, but diahrea is a major part of that,
vomiting and cramping as well, but if they have
no diahrea I don't think it could be that, also the smell of the poop is, well, it is unforgetable.
I have seen some posts about parasites, maybe they can look into that.
I wish I had more ideas, but hopefully posting will at least keep your issue near the top of the page.