10 Sinus Infection Symptoms

If you've been congested or had other symptoms for weeks, you may have a sinus infection.

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You’ve got bad breath

Halitosis—that noxious, embarrassing smell emanating from your mouth—is an unwanted by-product of the colored discharge that collects in your sinuses and nose and drips into the back of your throat.

The organisms that cause the infection produce volatile by-products that contribute to the smell. "Bad breath occurs because [breath] mixes with the odor from the infection," Dr. Papa says.

But Dr. Papa adds that sinus infections can affect your breath in other ways, too. The infection as well as medications like antibiotics used to treat the infection can dry out the mouth and contribute to bad breath.

Next: You cough up phlegm

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