I have a disgusting smile line and don't know what to do to get rid of it.

Thank you for your question and for posting your photos. Your smile line would best be treated with a hyaluronic acid filler such a Juvederm or Restylane. Specifically, I would recommend Juvederm Ultra Plus or Vollure. These fillers will last from 12-18 months. Consultation with a board certified plastic surgeon or dermatologist is recommended.

There are a lot of options for improving the nasolabial folds and this often means fillers for the folds themselves but also lifting around the mouth and cheeks to build underlying anatomical support. In our practice we combine sculptra with other fillers "layered" on top and lasers, rf treatments and peels to get the most conservative natural look. Please see a facial sculpting expert. Best, Dr. Emer

Hello and thank you for the question.
The smile line can be addressed with fillers. You might consider Juvederm Ultra Plus or Vollure which will effectively address your concern. The Vollure although more expensive will last you longer. 1-1.5 syringes will likely be sufficient. 
Hope this helps and Good Luck!
Dr. David