I'm not sure about your question, but I bought some raw brazil nuts the other day. I think they naturally taste earthy, thats how they always taste to me. You can soak them and dehydrate them to reduce toxins, but I'm not sure if this helps mold if there is any present.
I wouldn't worry too much about 1 or 2 a day; especially if you soak them and store them in the fridge.
This blog post has snippets of Info: Brazil Nuts, seeds and aflatoxin « MyRawFoodBlog http://rawfoodist.wordpress.com
Maybe their links will lead to better answers.