Babies remember things from during pregnancy
Babies remember smells, sounds, and tastes that they experience in utero, particular in the final months of pregnancy.
Studies show that foods eaten during the later stages of pregnancy can affect the baby's own food preferences .
Another study showed that babies whose mothers read The Cat in the Hat out loud twice a day while pregnant visibly responded to recordings of their mothers reading the book, while babies whose mothers did not read showed no response .
Smotherman, William P. "In Utero Chemosensory Experience Alters Taste Preferences and Corticosterone Responsiveness." Behavioral and Neural Biology 36, no. 1 (September 1982): 61--68. https://doi.org/10.1016/S0163-1047(82)90245-X.
Kolata, Gina. “Studying Learning in the Womb.” Science, New Series 225, no. 4659 (1984): 302–3.