I brush my teeth in the morning and leave for work without eating breakfast. i cough under my mask and it smells like rly bad even though i havent eaten. when i do, usually after a while the back of my throat tastes bad. i already went to dentist?

Rinse with mouthwash or half glass of water and hydrogen peroxide after eating . You can also suck on mints while at work.

Halitosis can be caused by so many things, including acid reflux, your diet, periodontal problems, and cavities. Brushing is often not enough and will not solve your problem. Since your dentist has determined you do not have dental issues, see your physician.