This work is about a kind of wearable device to detect halitosis,The utility model comprises a mask body and two ear hanging belts,The mask body has an inner surface layer and an outer surface layer,And at least one sensing unit is arranged on the inner surface layer,And the sensing unit is used to sense whether the oral gas has peculiar smell,And can send a sense signal,And the signal output terminal of the sensing unit is electrically connected with a warning unit；So,With the aforementioned structural design,So that users can find the halitosis in the first time,It can immediately improve the oral air health,At the same time, with the function of reminder,When the user is asked to talk with others,It will not cause disgust or embarrassment to others,And then improve interpersonal relationship and oral etiquette.本創作係有關一種可偵測口臭之配戴件，其包括：一口罩本體及兩耳掛帶，其中該口罩本體具有一內表層及一外表層，而該內表層上設有至少一感測單元，且該感測單元用以感測口腔氣體是否有異味，並能發出一感測訊號，又該感測單元的訊號輸出端則電性接連一提醒單元；是以，藉由前述的結構設計，令使用者能在第一時間即可發現口腔發出的口臭，而能即時改善口空健康，且同時能藉由提醒的功能，令使用者與人談話時，不會造成他人厭惡或尷尬的情況發生，進而增進人際關係及口腔禮儀。
