While unhealthy breath (medically referred to as halitosis) might be right down to poor oral hygiene, typically it might be indicative of one other situation.

"Sometimes breath is described as having an acetone type smell (think nail polish or those horrible sweets pear drops)," mentioned Dr Hussain.

"This might be an indication of a critical underlying well being situation – particularly diabetes."

Dr Hussain added: "If your breath has an ammonia-type smell consider getting checked out for kidney problems, as ammonia is normally excreted in the urine.

"Smells of rotten eggs and garlic means your liver isn't doing properly."

But, sometimes, smelly breath is due to the build-up of bacteria caused by retained food particles.

This type of smelly breath is easily remedied by brushing your teeth daily with an electronic toothbrush, and flossing.

As for sweaty underarms, Dr Hussain said "sweat would not scent", it's the "build-up of micro organism" that leads to body odour.

Some people are more prone to sweating than others, which puts them at increased risk of developing fungal infections.

"Sometimes when careworn or throughout sure phases in our lives, equivalent to puberty or menopause, there could also be a extra noticeable change in physique odour," said Dr Hussain.

Body odour can also be influenced by what you eat, so if you enjoyed an onion and garlic pizza the evening before, your underarms might smell that way too.

"As with halitosis, in case your sweat smells like acetone then think about diabetes, and kidney or liver illness could trigger modifications within the scent of sweat," added Dr Hussain.

"Sometimes it’s the physician’s fault; the drugs they gave you might be being excreted in bodily fluids – sweat included."

People who have a sinus infection or nasal poylps may also notice a bad smell.

"Infections within the tonsils and specifically tonsillar stones could cause a nasty scent within the nostril," said Dr Hussain.

"One very attention-grabbing phenomenon is phantosmia. This is the notion of a nasty scent within the nostril when there truly isn’t something there in any respect.

"This has been described as an early symptom of Parkinson’s disease."

Dr Hussain said: "More often than not all these symptoms are minor and down to easily explainable causes.

"However, the underside line is, any persistent signs ought to warrant additional medical consideration."

Dr Suhail Hussain is a private doctor and personal home-visiting GP masking the Herts and larger London space.