A bit about
basements. Recent house-hunting with an awesome mold inspector made us very aware of the myriad issues basements present for people with mold sensitivity. Our inspector basically asserted that finished basements were a deal-breaker, and that if we bought a house with a finished basement, then we'd need to rip all the materials out completely and remediate, and ideally leave the basement empty. Testing on potential houses bore out his assertions - even a small amount of drywall in a basement sent the whole house's HERTSMI scores very high, house after house. Houses with unfinished basements sometimes had high mold counts, but they were common outdoor molds. (For what it's worth, the inspector didn't charge us after the first house, so he wasn't just stringing us along to make money!)
We did find one exception, which had a below-grade space finished in a mold-safe way. It had concrete floors (with radiant heat) and a pretty glaze on top. Walls were either well-sealed concrete or plaster. Furniture was metal, glass, or solid wood with a heavy non-toxic sealant (AFM Safecoat products are great). No papers or throw pillows or clothes were stored there except in gasketed plastic bins. They had a couple of light cotton rugs (easy to lauder) and the wall art was metal sculpture or laminated. An industrial dehumidifier (nothing that's available at Home Depot) was plumbed into the drainage system of the house and ran continuously. This set-up, obviously, is rare!
Many believe that anything porous (drywall, carpet, cardboard, etc.) never should be in a below-grade space even if there is no standing water or leaks. The humidity generated by the normal daily dewpoint being reached by the ground simply will lead to mold growth, even in a "dry" basement, and human-made things tend to grow more dangerous molds than natural materials do. If you must finish a basement space, then it's better to use plaster than drywall, sealed solid wood rather than particleboard, metal and glass for furniture when possible, plastic storage bins with gaskets, etc. An industrial dehumidifier is a must, even if there's nothing in your basement. The Santa Fe company makes dehumidifier models that are reliable and keep moisture levels low enough to inhibit mold growth. 25% of the air on the first floor comes directly from the basement, due to the stack effect, so assume that mold in the basement is everywhere, unfortunately. (The bright side of that is that many don't bother remediating moldy unfinished attics, aside from making sure there's sufficient ventilation to keep the house from rotting, since air rises.) That's why the Santa Fe is so helpful - if the humidity in the house is low enough, then mold spores we can't completely avoid will not be able to grow.
Binders probably are a great idea, but personally I don't tolerate them well. I am not constipated ever in my life except when I take binders (or iron supplements), and those constipate me instantly. Even a few hours of constipation make be feel awful - headache, woozy, tired, no appetite. I realize I could take laxative supplements alongside binders, as many people do, but playing symptom whack-a-mole with supplement side effects is not something I have a lot of patience for these days. (Treatment fatigue is real!) Dr. Rawls says often that the best binders are vegetables and a working digestive system, and I tend to agree with him. Eating heaps of vegetables every day makes me feel my best. Last year, Neil Nathan emailed a newsletter with a chart listing which foods best bind which mycotoxins, which is super cool. I re-posted it on the forum, but I'm not sure how easy it is to find. I'll see if I can find it. Chlorella, glutathione, and other non-constipating detox supplements should be started slowly because they can make you feel worse. TUDCA seems like a good bet.
Whatever you had in the basement and can't throw away will need to be cleaned well. Sunlight helps! And be sure to wear an N95 mask, and do it outdoors is possible to avoid re-contaminating your space.
Good luck! This stuff is so hard. I know it's awful to post saying "I feel extra sick!" and have all of our responses be "Do this mountain of work!"
Anything you can do to tone down your reactivity right now also is good. Curcumin, magnesium, reduced stress, good sleep, water, simple fresh foods, etc. I'm sorry you are dealing with this!