Correction : It's the past.
20 Years ago a visiting engineer from France came to our company and explained that "Vin Plonque" was cheap wine that came in 2 litre plastic bottles.Bacteria can readily grow on the internal surfaces of plastic bottles. If the contents are wine the alcohol may supress them to some extent.
As can readily be determined by taking a taking a drink from a small plastic bottle of spring water. It might well have been 50 million years old but within 2 days it will be tainted.
DG