Every year on the day of the spring festival Shem el-Nessim, Egyptians are rushed to the hospital after eating the traditional delicacy of fermented (sometimes rotten) fish, or “fesikh.”
The ancient holiday marking the new season falls every year on the day after Coptic Easter and is celebrated by Christians and Muslims. Shem el-Nessim means “smelling the Zephyrs,” or smelling the breeze, in Arabic.