It can take up to a year for things to settle down, & for nerves especially to heal. Hopefully some of the others can chip in with the symptoms, not had those myself. I think there’s been a couple of people recently who’ve had problems with enlarged hyoid bone processes who might have had chest pain too- Michael definitely mentioned it, he’s just had surgery for the second time. Stylohyoid Ligament & Hyoid Bone Surgery | Bonn, Germany, 04/05/18 and 05/30/18
As Isaiah says, the cranial nerves have different functions- there’s some detail in the Newbies guide about symptoms & what might cause them, so have a look in there- I think possibly one of the Trigeminal nerve branches might have something to do with stimulating the salivary gland cells, not sure… Are your tonsils still there, any problems with those? I think others have had tonsil stones which can cause a bad smell or taste.
But I do agree with Isaiah that maybe not enough was taken off, & if the styloid process was at quite an angle it can cause problems, so that could be the case for you. A follow-up CT would be really helpful to see what’s left… If any revision surgery is needed, that will be tricky to get another doctor to do it, so it may well be that you have to consider seeing one of the really experienced doctors.
Thinking of you & hope that you can get some help- so frustrating after having had surgery.