Next, I’m going to tell you about Hexed with Halitosis. Lemons can help freshen breath that has gone sour after consuming certain spices, alcohol, cigarettes, or that is caused by insufficient salivation. To keep breath fresh, thoroughly rinse your mouth several times a day with the freshly squeezed juice of 1 lemon in a glass of lukewarm water. Chewing on a lemon slice after every meal will also help.