Hello,
Bad breath is actually not a disease itself, but a symptom. If you have bad breath, you should consult your dentist to get it diagnosed and to cure the reason behind it. In most cases, you should not go for antibiotics to cure your bad breath.You can try these tips:

* Try Chewing gum. This will reduce low traces of bad breath temporarily.
* Cloves:These are very effective in covering up bad breath. You can simply chew on some of them. Although you might not like their taste, but their oil is very effective in removing bad breath.
* Green tea: You can drink unsweetened green tea, as it washes away bacteria from your mouth.
* You can try chewing on some fresh parsley.This can be either brought from market, or grown at home.
* Make sure to keep your mouth moist by drinking water.
*Avoid cigarette smoking and tobacco chewing.

Hello
Welcome to HCM
Halitosis means foul odor that occurs because of poor oral hygiene.
Management of bad breath:

1. Floss first then brush your whole mouth including your gums, cheeks, roof of mouth, tongue and take a full 3 minutes brushing your teeth.
2. Sugar free Chewing gum: Since dry-mouth can increase bacterial build-up and cause or worsen bad breath, chewing sugarless gum can help with the production of saliva, and thereby help to reduce bad breath. Chewing may help particularly when the mouth is dry, or when one cannot perform oral hygiene procedures after meals.
3. Gargling right before bedtime with chlorhexidine mouthwash.
4. Maintaining proper oral hygiene, including daily tongue cleaning, brushing, flossing, and periodic visits to dentists and hygienists. Flossing is particularly important in removing rotting food debris and bacterial plaque from between the teeth, especially at the gum line.

Take Care
Regards
Dr.Neha

hi there
as you wrote you have no dental related issue then unpleasant odor could be possible because of stomach upset or any problem in your kidney .
get your blood and urine sugar checked .
do visit your dentist to rule out that your have healthy teeth and gums as some times we feel we have no dental related problem until unless there is no pain , dentist might explore more precisely.
do visit a physician to rule out other possibilities causing unpleasant odor.
thanx
regards

Hello there...This is a common complaint from the patients during the cold weather...When you have history of frequent cold/upper respiratory tract infection foul smell from the mouth is quite possible...problems like sinusitis and cold would lead to post nasal discharge that gets in to your throat resulting in foul smell... Once the symptoms of sinusitis and cold are treated your problem of bad smell would regress....
When you have deposits getting accumulated over your teeth, the gums get inflamed and swollen....There are millions of microorganisms in the oral cavity...As when you eat they start decomposing the food particles and that results in foul smell...get a thorough oral prophylaxis done and then can use mouth rinses to keep away from bad breadth...
the above findings - cold and deposits over your teeth, might concurrently be present....then you have to get treated for both...I advice you to consume lots of water...
Consult your dental surgeon for further clinical evaluation and management....