Love Is In the Air Perfume Question

Im curious, the 'VICTORY' Perfume that adds 75 attack power does not have 'Requires Love is in the Air' on it and it is not bind on pickup, you can trade them etc, however if you try and mail them they say you cannot mail items with a limited duration.


People in my guild have been farming for them to use for raids etc (like hundreds) so we want to know if they are going to dissappear after the event or not?