Another thing to consider is light and air. If your decanter is exposed to direct sunlight or heat, it can cause the whiskey to oxidize and lose its flavor. And, if the decanter isn't sealed properly, air can get in and cause the whiskey to evaporate. But don't worry, there are ways to prevent this from happening!
For example, you can store your decanter in a cool, dark place, like a cupboard or pantry. And, make sure to seal the decanter tightly after each use. This will help keep the air out and prevent the whiskey from losing its flavor. Plus, it's always a good idea to check on your whiskey regularly to make sure it's still good to drink.
