  We argue that parametrically strong enhancement of a thermoelectric current
can be observed in conventional superconductors doped by magnetic impurities.
This effect is caused by violation of the symmetry between electron-like and
hole-like excitations due to formation of subgap Andreev bound states in the
vicinity of magnetic impurities. We develop a quantitative theory of this
effect and demonstrate that it can be detected in modern experiments.
