Answer:
<em>- Eustress </em>
<em>I hope this helps</em>
The feel food chemical is called dopamine
Anything in the mouth, really. Gingivitis, for example. By brushing your teeth regularly (in the mornings, after lunch, dinner, at night etc.) you can prevent this i.e Good Hygiene. A common prescription medication would be <span>Erythromycin or Penicillin.
Hope this helps!</span>