Hi there, sorry for the late reply. Welcome to Medhelp and thanks for posting
You can read about "Pericoronitis" an (Infection Near Wisdom Tooth) at http://www.colgateprofessional.com/patient-education/articles/periocoronitis-infection-near-wisdom-tooth.
This infection cannot exist when the wisdom teeth are removed along with any skin flaps that trap food. so you need to go the dentist and talk about your options.
As far as your cleaning routine, it's great that you floss. So many people don't and they continue to have problems until they lose their teeth. So keep up the flossing, every time you eat , to remove all food.
I also suggest that you invest in a waterpic. You'll never regret ht investment. Alternate with salt, but always use mouthwash in your water pic (along with water in the reservoir) Also, i suggest that you get used to vigorously swishing mouthwash when your'e using the bathroom anyway. Continue to swish the mouthwash until it loses it's sting, and feels like you're swishing normal water. It will get rid of any bacteria on a regular basis through the day, and your teeth will thank you. If you have any reservations about it, look at some gnarly pictures of people who have dental problems and it will help to keep you motivated.
Seeing an oral medicine specialist is advised. If no identifiable orodental cause of halitosis, you may need to see gatroenterologist.
Wisdom tooth is generally useless, unless certain special condition exists .