Yes, on my dog unknowingly. thought her breathing issues were due to parasites, when in actuality she had systemic blastomycosis as I later found out through a lab test at the vet. I used the treatment for Dr.Hulda Clarke's pet parasite cleanse. A combination of parsley water (to keep the kidneys clean) black walnut green hull tincture, wormwood, and cloves. Her improvement was extremely significant. Both the black walnut and cloves are anti fungal. I have used this regiment on myself as well and it also brought Lyme disease to its knees in my case. You might also try royal rife light treatment frequencies for blastomycosis. Hope this helps.