I have been suffering from PATM for about two years now, most common reactions I get are people clearing their throat frequently, coughing, sniffing (I'm not sure if this last one is caused by PATM or something else). Previously I have had people complain of it getting hot around me and irritation in their eyes.
I have tried all kinds of diets for a prolonged period, gluten free, keto, no dairy, no coffee, etc and none have helped reduce the reactions. I have tried (excess) vitamin D supplementation AND getting a lot more sunlight to no avail.
I have come to realise in recent months is that there is a strong correlation between my use of mobile devices and the increase in reactions. I'm one of those chronically online people who is on their phone for much of the time when I'm not sleeping/working. I have made a real effort to reduce the amount of screen time I get and it has reduced the reaction I get SIGNIFICANTLY. I'm talking by approx. 80%. I suspect the only reason I'm still getting reactions are because I haven't gone an extended period of time where I have managed to completely stay away from my phone/iPad. I have noticed that using desktop computers are work don't seem to have much impact on the reactions.
In addition, heating food in the microwave oven before eating it significantly increases reactions. The worse my reactions got was when I was doing a keto diet and would eat frozen vegetables which I would heat up in the microwave for about 7-9 minutes. Let me tell you, the WHOLE offices would be clearing their throat constantly and while they were nice enough not to point fingers (to my face anyway), I'm sure they knew I was the culprit.
Please, for all of you other PATM sufferers, if you have tried everything else and nothing has worked this far, try not using your mobile devices or heating food in a microwave as much as you do right now, especially if your screentime is plentiful at the moment.
Do that and get back to me so I know I'm not dreaming this. I'm not smart enough to speculate on what about the use of these devices is causing these reactions in people but I'm convinced there is a strong link.