Hi! I am also a mold victim, and have got allergic bronchopulmonary aspergillosis that has no cure. I have found remedy for my brain fog though, and I feel ok regarding that nowadays. You are lucky if that is all u feel ;-) I take B12, grapefruit seed extract, vco, kelp, B complex, vitamine c, oxygen, neem, nettle (GREAT FOR ALLERGIES!) d3, quarcetine, lysine, larix, probiotics, magnesium citrate and dandelion for liver to cope w/ the toxins. I actually take much more stuff but this I took in the beginning and it helped w/ brainfog along with the moving out of the hell hole as well as the air purifier! Good luck.
P.S. Also Niacinamide.