The smelly stamp is part of a new collection to mark the 100 year anniversary of the Nobel Prizes, which are given out every year to people who have helped mankind.
The eucalyptus stamp represents the Medicine or Physiology section of the prizes.
Other features on the stamps include a hologram, a heat-activated picture and a stamp which has a whole poem crammed onto it, which can only by seen by the human eye when it is magnified eight times.
