why does seeing people eat in public trigger me

[Altruist]

certain brain region like the insula may be overreacting to input from the eyes, ears etc. insula is responsible for both feelings of disgust and also interoception (awareness of internal bodily state), and as such those can be percieved as overlapping in our minds. Aka u see someone chewing = u feel disgust.

when u increase serotonin signaling and norepinephrine using drugs , those somehow fuck with amygdala -> insula loop. not sure how exactly but it seems to dial down hyper reactivity to emotional/sensory stimuli tbh. so when ur serotonin is higher, ur brain is less likely to flag those stimuli as threatening/disgusting

yeah, sounds logical. those meds didnt really improve my state of mind overall, but in specific contexts like this one it was physically blatantly obvious to me that they still do make some difference

saying this because i simply can't fight the negative reaction to the behavior i described in the op, just like some people can't help but feel disgust whenever niggers, jews, fags or someone else is even mentioned