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Just received first my order from caterpillar vapes, golden ry6,Churchill,and smooth. the use by dates are 6-16 for the golden and the other two are 4-16 , are they safe to use? I opened and tried the golden and all I can taste is perfume and ash.
I've used flavorings that are still good, 2 years past the "pull" date

Flavoring usually last a long time..
Now ... if your talking about a mixed
juice, .. that's different story.
Some keep for a long time, others fad.
If it's "purfumy" it's mixed to strong. You can try diluting it.
If you DIY, and have a unflavored base, just start cutting it until it taste good.
I just don't know which one your talking about ..pre mixed, or flavor concentrate.
But both should keep long after the date, and can be diluted.
I DIY now, but I also have some pre mixed that I bought 3 years ago, and are well past the "expire" date, but they are still good.