Answer:
Flies do not like its smell.
Step-by-step explanation:
In the passage from "Fever 1793," the author Laurie Halse Anderson makes reference to the native African asparagus grass, which is used by Eliza and the narrator to prevent flies to come into the kitchen. In fact, the narrator says "That should discourage the flies." In that respect, flies are intimidated by the plant, which contains flowers and thorns, as well as small, red, toxic berries.