Not necessarily. They could be bounded, oxidized chains of the wood tannins in the bottle which come from the Oak Barrels used to age the rum before bottling.
First of all if it has a worm in it . It's not tequila its mesqul and as long as the worm isn't floating its ok
Cheap wines are made and sold to be drunk immediately. They will not improve with age. You could keep a bottle of cheap red or white in a drinkable condition for about three years, but it won't be as good as the day you bought it.
Can I return an unopened bottle of alcohol.
1969 bottle unopened carleton canadian whiskey
Around $12.50 for an unopened 8oz bottle.
.Who is with you?
Chardonnay is good for about 7 years unopened.
About $20
199$
An unopened bottle of Pennsylvania Dutch egg nog will be good for up to seven months. This variety of egg nog contains alcohol.
If the bottle is unopened then it can last as long as you want it to, but I personally wouldn't drink it after having for more than 9 months or so.
Just the bottle with stopper (opened) 45$. With hang tag 60$ box, hang tag, bottle 150$ all three in mint shape unopened 500-700$