Foul-smelling flatulence can have various causes, ranging in severity from 'minor' to 'needs attention'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose foul-smelling flatulence, we could:
|Lactose Intolerance||0%||Ruled out|
When you pass gas ("fart"), how does it usually smell?
Possible responses:→ Don't know / it varies a lot / don't want to know!
→ Usually odorless
→ Usually about 'normal' / 'noticeable'
→ It varies between 'normal' and terrible
→ Usually terrible / people run away screaming
Infections of the digestive tract can lead to foul-smelling flatulence. There are many different bacteria and viruses that can cause infections in the lining of the digestive tract. Some of these may be associated with traveling to different parts of the world; infections are usually accompanied by gas, diarrhea, fever, and abdominal pain.
Lactose is the sugar found in dairy products. When we don't have enough of the enzyme necessary to break down lactose, it remains in our digestive tract for odor-causing bacteria to feed on.