Hi there, I just picked up a couple of barnyard boxes filled with old bottles. A few still have caps or corks sealing them. The outside of the bottles are great but the inside are a mess. Should I uncap/uncork these bottles to clean the insides? One in particular, a Scott’s Emulsion COD liver oil bottle, has a rusted cap on top. I imagine I will destroy the cap when I try to remove it and was wondering if I should just leave the mess inside alone.
There isn't much reason to try to save a cap that rusted, other than to seal in the smell of dead fish that has been putrefying for the past 90 years. It'll certainly make the bottle look nicer if you clean it up, but I'd recommend doing so well away from your house.
Yeah it is one of those resealable caps, they were called Kork-N-Seal caps and I think they have another name but I forget what it is. Scott's used those for a while before switching to a screw top when they redesigned the bottle to the rounded, pictorial design.