5 potential reasons for bad-smelling floss
1.
If not removed promptly, it will cause the worst foul odor, says Dr. Khan.
Other foods can lead to stinky floss, too.

Tooth decay
Tooth decay is also a common stinky floss culprit.
Halitosis
If you have halitosis and your breath smells, so will your floss, says Dr. Khan.
Is bad-smelling floss linked to bad breath?

board-certified dentist at Altus Dental and co-founder ofRiven
Bad-smelling floss is almost always a good indicator that you have bad breath, says Dr. Khan.
Its Amazing How Its All Connected.
She mentions that many of the same reasons for stinky floss are behind bad breath, too.

The firstand most importantone is to visit your dentist regularly.
Typically, Dr. Kalasho recommends visiting your dentist every three to four months to maintain optimal dental health.
The proper technique is a must, too, particularly when it comes to using string floss.

You want to check that you take your time with it.
ensure you keep flossing until you see nothing on [the floss].
Frequently asked questions
Why is there a bad odor when I floss?

board-certified dentist at Altus Dental and co-founder ofRiven
There are a number of factors that might cause foul-smelling floss.
For one, it could be that there are food particles stuck between your teeth, says Dr. Khan.
Why do the spaces between my teeth smell?

Why does my floss smell when I floss my crown?
One possible reason why your floss smells when you clean around a crown is tooth decay.
Aylkc, Bahadr Ugur, and Hakan Colak.

Halitosis: From diagnosis to management.Journal of natural science, biology, and medicinevol.
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