Abstract In this paper we consider an Euler fluid coupled to external electromagnetism. We prove that the Hopfion fluid-electromagnetic knot. carrying fluid and electromagnetic (EM) helicities. solves the fluid dynamical equations as well as the Abanov Wiegmann (AW) equations for helicities. https://www.roneverhart.com/L-Homme-Ideal-Cologne-by-Guerlain/