Hidden sources of Carbonated drinks

Fizzy drinks add gas and can worsen bloating and reflux.

Where it hides

Kombucha and hard seltzers — carbonated from fermentation or added CO2, easy to overlook since they're marketed as "healthy" or "light"
Beer, champagne, and sparkling wine — the carbonation is part of the drink even when alcohol is the main focus of attention
Fountain sodas refilled at a restaurant — easy to lose track of total volume when a glass gets refilled through a meal
"Sparkling" flavored teas, lemonades, or juices at cafes — carbonation can be added to a drink that otherwise sounds like a still beverage
Effervescent tablets (Alka-Seltzer, some fizzy vitamin/electrolyte tablets) — the fizzing action means CO2 is being introduced right before you drink it
Soda used in a recipe (floats, glazes, marinades) — carbonation and ingredients from the soda carry into the finished dish

Information only — not medical advice or a diagnosis. Settle structures a self-experiment and helps you track what you observe.