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Here are some temporary natural solutions to bad breath:

Steep a good sprig of Thyme or Rosemary in a cupful of boiling water for 10 minutes.  Strain.  When it has cooled, use it as a mouthwash.

Chew Fennel or Cumin seeds.

Add two drops of Peppermint to a teaspoon of vodka; then add half a cup of warm water and use as a mouthwash.

Floss and brush your teeth to make sure they are clean, then add a drop of Tea Tree oil or tincture of Propolis to your toothbrush for a final going-over.

There are a number of ready-made natural breath fresheners on the market - here are three useful ones that may be available in your area: Neal's Yard Remedies Lavender and Myrrh Mouthwash; Comvita's Propolis Oral Fresh Mouthwash; and Bioforce Dentaforce Herbal Mouthwash, made with Cinnamon, Clove, Peppermint, and Sage.  Any of these will contribute to the health of your gums as well as freshening your breath.
If you have persistant bad breath, either you have a dental problem which needs urgent attention, or your digestive system is in poor shape, or both together may be the case.  Check with your dentist.  If the problem persists, your digestive system needs a thorough overhaul, and you probably have other symptoms of trouble anyway - wind, bloating, constipation or diarrhea. 
Natural Treatments For Bad Breath