How does Cynthia Kadohata use imagery in Kira-Kira?

Imagery:

"The factory workers weren't allowed to take unscheduled breaks, so they all wore pads in case they needed to use the bathroom. It smelled like my mother had used hers."

"I found myself embarrassed at the smells emanating from my mother. Back in Sam's room the doctor had sniffed once at the air and looked around for the source of the smell."