Christoph

Sorry to necro but I wanted to add some things having read through this thread. Have you considered that you and your son may have a sensitivity rather than an allergy. Allergies are detected using a black or white process. Whereas sensitivities are not easilt detected by western medicine. Building materials are often made with profit in mind first, and people's health last. Formaldehyde is still being used to coat wood, in spite of numerous studies showing links to it being cancer-causing. Personally, I believe we are all susceptible to these chemicals, no one is immune, it's just that some people are tougher than others. There is no current established cure for chemical sensitivities sadly so one thing you may want to consider is building a natural room in your backyard, made using only untreated materials such as mud bricks, which are easy and inexpensive to make. I've also purchased a bed and bedding that are chemical-free and it has helped me immensely. Note there is often a big difference between chemical-free and "organic". The fact that there are toxic chemicals in our foods and water, that we try our best to avoid; means I am unsurprised there would be chemicals in our indoor houses as well. Companies will try to get away with as much as they can to make a quick buck. Best wishes