Lots of saliva
If your mouth is flooded with saliva after a meal or snack, that’s often a good indicator of reflux. For some of the same reasons, your mouth starts watering before you vomit and your salivary glands kick into high gear when they detect an irritant in your esophagus.
When stomach acids escape your belly, they don’t just irritate your throat. They can also make their way into your lungs. If that happens, you can end up with a serious case of pneumonia, especially if you’ve developed pneumonia more than once without a good explanation.