A childhood belief about being ill

When I was 6, my family was getting into the car and my mom said she had to go back inside and get her leather handbag, but I heard her say 'Liver handbag'. When we got in the car, I kept thinking of how disgusting liver was, let alone as a handbag. I could swear that I could smell the rotting meat in the car. I was trying so hard not to think about it by looking out the window. My mom noticed I looked kind of tense and she pulled me close to her and wanted me to lay my head on her lap, where she also had the bag, and I tried to make myself stiff so she couldn't move me but as she pulled me closer, I kept thinking I thinking how squishy the liver probably was before they could make it into a bag and I threw up all over the place, especially on the bag. After that I always rode in the front with the windows wide open and the bag no where to be found.