Just putting it out there but do you have any mould in your home? We now know that even a little can make you sick.
My daughter has terrible asthma and we have just discovered all about mould the hard way. My husband now has a long term respiratory condition.
So much so we have left our own home and are now in temp accommodation with no personal items for fear of contamination. It's often the toxins that the mould produces that cause the issue , these are invisible, and not just the black stuff you see.
The specialist that alerted our attention to mould and its detrimental effect is trying to start a campaign to call for government action.
Read the world heath organisation on damp and mould, free online, World Health DOc
Then if you agree vote for the campaign to be taken seriously
All the best, and no I am not a spammer, just a really passionate mother trying to stop others suffer like we have. all questions answered.