I'm worried i have bad breath everyone says i don't but if i lick my hand and smell my saliva it smells gross. is that what others are smelling?

Bad breath: people have different perception of bad breath. It comes most commonly form the mouth due to post nasal drip, poor oral hygiene, mouth breathing, alcohol consumption, menstrual cycle, onion and garlic and food that stick between the teeth. To prevent it is proper oral hygiene, use of plastic tongue cleaner, deep gurgling with mouth wash, eating fibrous food, chewing gum and increase water intake

It May Not Be: The perception of smell will vary from person to person. What you perceive as obnoxious may not be to someone else. The foods we eat and drink, meds we take, habits we may have as well as state of your dental health and structures of the oral cavity, sinuses, throat may have an effect on what one smells. Also, consider what you may have touched with your hand before smelling the saliva.

Do this: Use dental floss thoroughly three times a day. Run the floss along the surface of your tongue. If you have any tonsilloliths, dislodge them. This will remove the usual causes of bad breath. Best wishes