English Experts

[donay mendonça]

Olá
Mau hálito=Bad breath
Ex:He has brad breath.(Ele tem mau hálito)

[Mary Ziller]

The medical term is halitosis.

[thmonte]

Wikipedia vai mais fundo, como reproduzo abaixo:
Halitosis
Halitosis, oral malodor (scientific term), breath odor, foul breath, fetor oris, or most commonly bad breath are terms used to describe noticeably unpleasant odors exhaled in breathing – whether the smell is from an oral source or not.
Halitosis has a significant impact — personally and socially — on those who suffer from it or believe they do (halitophobia), and is estimated to be the 3rd most frequent reason for seeking dental aid, following tooth decay and periodontal disease.

[jose garcia]

hi,some people use this (SOUR BREATH)bye.