Changing the fragrance you use on a regular basis helps with going nose blind, you can go nose blind with every scent good and bad.
When you wear a fragrance regularly and you are continuously stimulated by the same scent, the nerve cells will eventually stop sending the electrical signal to the brain. This means you will no longer be able to pick up the fragrance.
The best and easiest way to stop this from happening is to switch your fragrances on a regular basis. This is the same with candles you burn regularly in your home.
What better time to try a new fragrance, start the new year right!