Type 4 Blood-borne halitosis (bad breath) according to Aydin. Source of odor is chemicals in the bloodstream that transfer to the lungs and then are exhaled.

This is caused by volatile chemicals in the circulation that transfer to the lungs during [...]

Type 3 Halitosis (Gastroesophageal) based on Aydin 2014). Source of odor is gas leakage from the stomach. 

From the desk of Bassel Paul Gebrael DDS, Dip. Perio, FRCD(C), FICD Type 3 halitosis [...]

Type 2 Airway Halitosis ( based on Aydin 2014). Source of odor is respiratory tract including sinus and tonsils

From the desk of Bassel Paul Gebrael DDS, Dip. Perio, FRCD(C), FICD Type 2 bad [...]

Type 1 : Oral halitosis is also called oral malodor and is commonly termed “bad breath”

From the desk of Bassel Paul Gebrael DDS, Dip. Perio, FRCD(C), FICD Bad breath affects [...]

How to measure bad breath at home.

Simple portable devices that measure Hydrogen Sulfide gas are available at Walmart or Amazon. Bad [...]

How to manage bad breath that won’t go away.

a) Use a tongue scraper to reduce malodorous coating on the tongue and floss or [...]

Morning breath? The types of bad breath explained

The gases that come out of the mouth that cause bad breath are volatile sulfur [...]

Sinus infection and tonsil stones can cause bad breath.

Bad breath can originate from causes outside the mouth: a) Bad breath from the nose [...]

The causes of bad breath explained

Bad breath also known as halitosis is a serious concern that can lead to social [...]

Bad breath can be an indicator of active gum disease

Volatile Sulfur Compounds (VSC) like hydrogen sulphide are produced by gum disease causing bacteria and [...]