As an oral cancer tumour outgrows its blood supply and forms an ulcer, bacteria could infect the sore, says Dr Mark Persky, a head and neck tumour management specialist.

He continued: “Those bacteria leave a foul smell that, unlike your typical morning breath, won’t go away when you brush your teeth.

“Plus, pain in the mouth might make it difficult to swallow.

“You build up bacteria in the mouth that typically get flushed out with swallowing.

“The bacteria that stay there are producing gasses that produce bad breath.”

Source: | Daily Express

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