Hello, I agree with seesaw above me. Any kind of harm to yourself is a permanent solution to what is often a temporary problem. I also second messaging or calling a crisis resource and following up with your therapist or psychiatrist. All that you have mentioned issue wise are very fixable problems. All states have Medicare or Medicaid and they often times cover dental care free or low cost. Also if the smells could be a physical problem. You could have like physical issue that is causing the issue of the smells. Thyroid can cause sweating which could cause the smells. You could be lacking a certain digestive enzyme. Most of what you have mentioned are physical problems which has real solutions.
As seesaw said there is a person out there for everyone and you just haven't met the right person yet; but as seesaw mentioned now is not the right time because you aren't in the correct head space for a relationship.