So I've used Tj's vanilla for a while and it's always been good except for this last bottle that I had, I used it right when I bought it and it was good.
Then I didn't used it until about a month or two later, first thing I noticed was a touch of glue substance under the cap, cleaned it off and shrugged my shoulders, but then as I poured my vanilla the color seemed off, it was kind of cloudy and not as dark.
It smelled off and when I tasted it.. yuk.

Then I realized what happened.
There was a paper/plastic layer underside the cap when it was new..
I guess it somehow detached from the cap and dissolved into the vanilla making it bad. I just bought a new bottle and immediately pulled that layer from the cap and tossed it.