Following are my views. Let me know in the comments if you agree or not.
1. Reactions are because of irritant chemical gas released from body. The irritant gas is produced in gut. Then it goes to mouth, poop and urine, also goes to sweat through blood. This is why underpants have the same irritant gas smell.
2. Reactions by people: sneezing, coughing, clearing throat, headache, dizziness, unnatural hunger feeling, upset stomach, watery eyes, etc.
The reason patient has less reactions beacuse they are used to it being exposed 24/7 so body learns to ignore it.
But Patients feel: Headache, lack of concentration, insomnia, watery eyes, weird taste in mouth, sometimes blood in nostrils, etc.
These all are because of inhaling that irritant gas.
3. Possible cause: Corrupt metabolism which fails to breakdown toxic irritant chemical. The gas is Toluene, xylene, as per research in Japan.
4. Treatment: Fully understand mechanism of the irritant gas release and figure out ways to breakdown them into non irritant gases.
Extensive research is needed to figure out the actual treatment.
Until full research, Just hit and trial can be done.
Hopefully, enough funds are raised for the research. If I became millionaire in some day in my life I will definitely run a research by experts.
I think that many people are having paranoia and considering it as energy, wave, spiritual, electromagnetic radiation, transmission through cellphone, etc. And that's natural too because until you have an answer you are think of anything.
Let me know what are your views on this.