Here’s why some people get upset when they hear chewing
▻http://www.businessinsider.com/heres-what-happened-to-sea-levels-the-last-time-earth-was-this-warm
MRI brain scans showed that both groups of people reacted similarly to the neutral and annoying sounds. But misophonics responded far more dramatically to the chewing and breathing. They showed more activity in their anterior insular cortex, a brain structure involved in emotional processing.