Is it an old house with old building materials?
I know someone who had a lot of problems with food allergies, had to follow a very strict diet or have stomach issues. On vacations though she could eat stuff and not have a problem. They eventually did a test where she just stayed somewhere else for a couple weeks and her problems went away. They think it’s just she’s sensitive to old building materials. They moved to a newer house six months ago or so and no problems since, can eat whatever she wants. Fuckin weird, but maybe you have some shit like that going on.
Its a brick house, built in early 1990s. So not super old, but not particularly new either. Has a wood burning fireplace in the family room which we've used at least 1-2x a week so that might be affecting the IAQ a bit. Also, I haven't really had the opportunity to air the house out since fall, since half the time its below 40 here, so that could be a factor too. Dont remember coughing much if at all when were in Hawaii for Christmas break, seems like it started when we came back.
Ive been reading about symptoms for poor IAQ and I feel like I had most of these in past few weeks, especially the headaches. I pretty much never get headaches.
I called a local HVAC company to come and clean out my entire HVAC system this week