I rarely get sick and my entire home is air filtered. Diet is the most likely culprit I've come up with. It isn't shocking. I already know I don't eat enough some of the nutrients I'm supposed to. And the symptoms align. I just wanted to know if anyone has tried beef based powders so I know what to expect.
Discussion
Probably is better to eat what you can cook yourself. At least you know what goes in there. I wouldn't fiddle too much with things like whey protein, hydrolisates or even beef powder.
Get a good medical check up is you can. I'm not a medical professional and better seek advice there in first place.
I still stress to look into IAQ including particular matter (dust), all fractions.
In regard to indoor air quality in my case it was revealing to get sensors measuring that. Even if it's not very accurate it still some point of reference. I found for example incidentally high radon levels which was confirmed by a professional measurement.
If you have air-conditioning that might be in turn potential source of problems. Usually related to maintenance of such. I do not know your setup, just guessing and I'm likely wrong. I do not know what you mean by _filtered air_. Is it air purifying system?
Good thing is if you're able to simply open windows to ventilate, on condition that you're not in too polluted area.
Sometimes shit can permeate from your neighbours, who for example like frankincense or air fresheners. They would not be able to distinguish between freshener and sprayed disinfectant containing benzalkonium chloride apart of fragrance and odour neutralisers.
Even if you're not hypersensitive now you'll might be soon.
Just saying. Good luck.