I would swear on a stack of bibles that my Coca Cola products we have been buying over the Summer have way less CO2 in them than normal. There is just not much zing on the tongue and by the time I am half way through drinking one its basically flat, I mean no zing FLAT!
https://www.npr.org/2022/09/22/1124491808/beer-carbon-dioxide-shortage
https://www.npr.org/2022/09/22/1124491808/beer-carbon-dioxide-shortage