Celery seeds, pepermint, mouthwash, drink water, make sure you brush your tongue and gums (not just your teeth), destress, baking soda, fresh carrots, fresh celery, Aromatic spices, and, of course, toothpaste. Bad breath could also be the sign of illness, too.
There are many causes of bad breath. However, 85% or more of the sufferers of bad breath, the single most reason is the bacteria that live in our mouth. Mouthwash is just a temporary remedy. I couldn't get rid of my bad breath for long term until I found BLIS K12. There is a lot more information on either http://www.blis.co.nz or http://www.bad-breath-cure.us. It is well worth reading.
You need to learn the source if bad breath. It could be unhealthy mouth, tooth decay or gum infections. It could be intestinal and coming up from there. Try the dental angle first, then work on digestion.