watch for bed bugs as well.
Also make sure there are no airborne mold spores, which are very common allergens and associated with many health issues.
There are mold testing kits you can purchase, however, in the interim, you can take certain measures to lessen the effects.
Avoid conditions encouraging mold growth, by using heat, insulation and ventilation.
The easiest way of reducing moisture and humidity levels (which encourage the growth of mold) is by ventilating the house by opening doors or windows.
Lampe Berger, is a product worth checking out. Burning it may neutralize
air borne pathogens, including mold spores and other offensive molecules.
Make sure, if you get one, that is genuine-made in France- and not a cheap imitation, including the scented oil. You can also get unscented fuel.
Take extra time to read the instructions, so it works well for you and your family when you use it.
I own three! When I cook something like cabbage, or fish, Lampe Berger
comes to the..rescue. Odors get completely eliminated within 10 minutes!
It was first invented and used some 125 years ago to disinfect hospital rooms in Paris. Now sold all over the world.
Take care.
Niko
There is a pending court class action case against a company called "Lumber Liquidators" for importing plywood and lumber from China treated with formaldehyde and toxic chemicals that vaporize and exude with time and cause such symptoms. It is possible this is the cause of your problem.