Since your dental scaling didn't resolve this, your bad breath is likely directly linked to dry mouth, as saliva naturally clears odor-causing bacteria. I recommend: 1. Alcohol-free mouthwash: Use formulations containing xylitol or zinc, which neutralize odor without drying your mouth further. 2. Saliva substitutes: Over-the-counter oral sprays or lubricating gels containing carboxymethylcellulose help maintain moisture. 3. Saliva stimulants: Chew sugar-free gum with xylitol. For severe cases, a doctor may prescribe stimulants like pilocarpine. Ensure you stay well-hydrated. I highly recommend consulting your doctor or dentist to review if any of your current medications or medical conditions are contributing to this.