The problem with this method is that breathing into your hands doesn’t propel breath out from the back of your mouth in the same way that happens when you talk. So when you breathe into your hand you might miss out on the smells from the gases produced at the back of your tongue, the main place where bad breath originates.
Doctors have three methods for testing for bad breath. They can assess it themselves by sniffing one of the following: the patient’s breath just 5cm (2in) from the nose of the doctor, the contents of a spoon which has been scraped across the top of the tongue, unwaxed floss which has been passed between the back teeth or a petri dish containing the patient’s saliva that’s been left in an incubator at 37C (99F) for five minutes.
MYTH: IF YOU HAVE BAD BREATH YOU PROBABLY HAVE AN UNDERLYING ILLNESS
Most of the bad smell comes from volatile sulphur compounds, gases with distinctive odours. Hydrogen sulphide, with its classic rotten eggs smell is one of the main offenders, but even worse is a substance called ethyl mercaptan which tends to be described as smelling of decomposing cabbage. It’s the compound which makes some people’s urine particularly pungent after they’ve eaten asparagus.
MYTH: MOUTHWASH ALWAYS GETS RID OF BAD BREATH
The first thing many people do if they suspect they have bad breath is to reach for the mouthwash. The mint or clove flavouring does of course, disguise the smell for a short time, and many mouthwashes also contain antiseptic. The idea is to eliminate the bacteria that leads to foul-smelling compounds. For a time this can work. But there has been some debate concerning containing alcohol and whether it does or doesn’t exacerbate dehydration. A very dry mouth can cause breath to smell worse.
Drinking more water during the day can help, both by rinsing away food and preventing dryness in the mouth.
MYTH: BACTERIA IN THE MOUTH IS A BAD THING
Every individual has a slightly different community of between 100-200 microbes in their mouth. As we are coming to appreciate the human microbiome and the positive role that the millions of bacteria present in our bodies can play, instead of eliminating bacteria from the mouth altogether, scientists are trying to work out how to get the right combination, by targeting specific bacteria for elimination or using probiotics to encourage certain bacteria in the mouth.
Phase I and II trials have already been conducted into killing the bacteria most often implicated in tooth decay. The substance has been trialled as a gel applied in a clinic and next it will be tested as a varnish, again applied in a clinic, but accompanied by strips which people can take home and apply to their teeth as a follow-up treatment. This opens up the possibility in the future for using similar methods to target the bacteria most often implicated in bad breath.
It’s early days, so for now the medical advice is to brush and floss your teeth carefully, to drink plenty of water, not to smoke, to eat a balanced diet and to see your dentist about bad breath in case you have early signs of gum disease.
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