We had water in our crawl space about a year ago, now we have mold. I have been sick for a long time wiht upper respitory infections and asthsma, we just had someone go under the house and wash the wood down with bleach. They scrubbed it off and then reapplied the bleach.Now do we have to seal the wood? What is the best to use. We also have mold in our garage,My whole house smells like mold. Could this be in our air ducts? I would sure appreciate some info. Thanks, Sharon