Hi jason,
You don’t need to come to Turkey for bad breath. You can first see an ear, nose and throat doctor and then a dentist in the country you are in to determine what the problem is. Bad breath has many causes, sometimes it can be caused by teeth, sometimes by the stomach and sometimes by the tonsils. This is a simple treatment method, you can have your treatment at the local hospital in the country you are in without having to come to Turkey.
Get well soon.

Turkey is the best place to treat bad breath from mouth, as they are very well known for best doctors , But you have to know there are many reasons for bad breath from mouth, It may be cause by dental cause but it as well also can be cause by posterior nasal discharge and this is a common reason especially if you have seasonal allergies, Doctors at first will analyze the reason for the problem and then you can decide which clinic to visit if you want ENT clinics i would recommend “ Prof. Asem Kaytaz”. And if you need dental clinics i recommend “Maltepe Dental clinics” in Istanbul, Finally Bad breath is just not only a medical issue but i understand it’s also embarrassing so If I recommend a trusted place to treat it I will surely recommend Turkey.