Anyone who loves coffee wouldn’t mind chewing a coffee bean for some time. It might sound like a weird thing to do but doing so is actually good for your mouth.
Firstly, coffee beans are known to eliminate bad breath. So instead of chewing gum or using mouth spray, you can simply chew a roasted coffee bean in your mouth. Secondly, coffee bean has good antibacterial properties too. Chewing them can help you maintain good oral hygiene.
If you don’t like coffee, then you can also try mint for good breath.