Vanilla based e-liquid

[teddy_rox]

So about a month and a half ago, I had purchased a vanilla based juice from a local vendor in SoCal. After the initial steeping process of 24-48 hrs, I capped it and placed it in my drawer for a week. Unknowingly, the existence of this juice had slipped my mind and a week had turned into 2 weeks and so forth. I figured this was a plus reason being that as juice ages, the flavor enhances. After trying it, my initial thoughts were that it tasted kinda rancid, expired in fact. I'm not completely sure if I had received a bad batch or what not but I do know that although taste is subjective, that my taste buds can't be this outta whack. Any opinions would be appreciated. Thanks.