  Topological superconductors have been discovered with recent advances in
understanding the topological properties of condensed matters. These states
have a full pairing gap in the bulk and gapless counter-propagating Majorana
states at the boundary. A pair of Majorana zero modes is associated with each
vortex. This understanding had a great influence on the theory of
superconductivity and their following experiments, but its relevantce to
organic compounds was not closely observed. Here, we analyze the topological
states of various polyaromatic hydrocarbons (PAHs), including benzene, and
reveal that they are topological superconductors. We have analyzed the momentum
vectors of benzene and other PAHs through a semi-classical approach to confirm
their non-trivial state. Their unique properties might be originated from the
odd number of Kramers doublets in PAHs. The H\"uckel rule describing
aromaticity can be reinterpreted with a topological viewpoint. It suggests that
the (4n+2) rule can be split into two pairs of (2n+1) electrons each, namely,
electrons and holes with spin up and down. Therefore, it always forms an odd
number of Kramers` doublet. Moreover, n in the H\"uckel rule can be interpreted
as the winding number in global next-nearest-neighbor(NNN) hopping. This work
will re-establish the definition of aromaticity that has been known so far and
extend the use of aromatic compounds as topological superconductors to quantum
computers.
