I went to my cabinet of colognes and noticed that a bunch of the colognes I owned have lost their smelll, and I have spent a lot of money on them and have not had many of them for that long, my cabinet has a door which blocks out light, because I hear it is best to keep them in dark places! Why have they lost their scent down to watered down to alcoholic spray more than one of fragrance, and what can I do to ensure they stay as fresh aslong as they can?