Dr Pepper complaint: Terrible chemical Dr. Pepper

As i do nearly every day, i purchased a few 2-liter Dr. Peppers at my local Food Lion yesterday morning which was August 19, 2022. 2 of those were drank during the day and were great! A short time ago, I went to get a glass from the third one which was refrigerated and roughly half full. In putting the glass to my lips to take a sip, an awful smell overtook me. The best description I can offer is that it smelled exactly like kerosene (my boyfriend compared it to charcoal lighter fluid). It was so potent that you could literally taste this unknown substance immediately upon smelling it! It also leaves a filmy feeling on your lips just from getting near the liquid! Its now been 2 hours and i still have filmy, numbish lips and can smell it everywhere. We instantly knew we both drank some earlier in the evening but brushed it off as insignificant because the toxicity was much less at that time. Looking back, he told me he almost poisoned himself because he sprayed a bug outside and had been tasting bug spray since and I then told him that when I took my medication, it oddly tasted like bug spray! After close examination, it continues to increase in strength as the contents become less and there is a separation layer on the top as you would see with oils and other toxic, flammable chemicals. The label was wrinkled and fit loosely but the bottle doesn’t seem flattened. Dr. Pepper is the sole soda of my household and I’m now scared to buy another.