Can orange peel be used to treat bad breath?

Orange peel is helpful for treating bad breath.
Improve oral odor
Orange peels are rich in volatile oils, such as limonene. These volatile oils have a pleasant smell that can temporarily mask bad breath when chewed or rinsed with orange peel. Just like using chewing gum, it can freshen your breath in a short time.
Antibacterial action
Orange peels contain some natural antibacterial properties. The bad smell in the mouth is partly caused by the growth of bacteria, such as Streptococcus mutans, which causes dental caries, and porphyromonas gingivalis, which causes bad breath. The antibacterial components in orange peel inhibit the growth and reproduction of these bacteria. For example, studies have found that orange peel extract has a certain inhibitory effect on certain oral bacteria, thereby reducing the odor produced by bacteria breaking down food residues.
Promote digestion and reduce the root causes of bad breath
Bad breath is sometimes caused by indigestion, when food ferments in the stomach to produce an odor and then regurgitates through the esophagus into the mouth. Orange peel can promote gastrointestinal digestion, as mentioned above, it contains volatile oil can stimulate gastrointestinal peristalsis, so that food can be better digested and absorbed in the stomach, reduce the situation of bad breath caused by indigestion odor.
However, orange peel is only an aid in treating bad breath. If bad breath is caused by a serious oral disease (such as periodontitis, dental caries, etc.) or other systemic diseases (such as diabetes, liver disease, etc.), it also needs to be treated for the specific cause.