The neutrophil theory is simply convincing because it can be extended further. When the neutrophils attack the yeast they suicide and unleash acid over the target. That accounts for the sour and perhaps metallic taste of your salivation. And that you got an excessive salivation. It also explains why mercury toxic people are acidic, and why the pH of urine is low. Mercury seems to be incredibly toxic to the functioning of these neutrophils.

Unfortunately foods like fruits, which result in a high pH when eaten, also contain sugar which is bad for yeast. Potassium citrate may indeed be good, but you cant consume much of it, or you'll get excess potassium, which results in heart problems.