TBH, I really don't have this issue. Once when I attempted suicide I had eaten Ravioli from a can, and threw that up. Couldn't eat that for about 30 years. But our bodies do teach us what has made us sick in the past and the smell will often make our stomach react. However, the way you described it sounds more like it is in your head, instead of your body. But I have no idea, just responding.