You probably need to have a look in your parents’ drinks cabinet. No doubt there will be a bottle or two of whiskey that was opened in the 90s and then pushed to the back of the cupboard by Malibu or Cinzano, and then forgotten about. Do them a favour, bin and replace (the whiskey… the Malibu and Cinzano does not need to be resurrected.)
How can you tell if your whiskey or bourbon has gone bad:
The colour has changed.
It smells bad, or just not good.
It tastes bad or fizzy.
There are bits floating or settled in the bottle (this is not Goldschlager… if you find Goldschlager in the cupboard, do them another favour and bin it!!).
There is dust on the bottle that looks like it has been there for 3 years!
If you are looking for a different replacement rather than a straight up swap, I would recommend a Woodford Reserve or Eagle Rare for an everyday, everyone replacement. Something a little more special would be the Japanese Nikka from the Barrel or Hibiki Harmony. Go for a ‘wild’ bottle that your friends will not have had… go for a Mexican Sierra Norte Yellow Corn or South African Bain's Cape Mountain Whisky.
Whiskey Bicycle ~ access your bicycle