Does Food Make People Emotional?

Do foods make people emotional? Like eating a chocolate makes people happy. I think the some of the food makes people emotional because some dishes contain tiny things that people taste like, for example, we make facial expressions when we find a lemon sour. But why are we happy when we eat chocolate? We are happy because in cacao some minerals are going expression of happiness and it gives at least a little happiness. And for example, when we eat banana or nuts, it gives expression of happiness like chocolate like I said. And there is food that makes us unhappy, stressed. Like white flour, rice, watermelon these make us stress or unhappy. So, I think that some food makes us emotional like stressful, happy, unhappy. And food made by people make us sad, too.