Reference: Fataawa Ramadhaan – Volume 2, Page 501, Fatwa No.457
al-Muntaqaa min Fataawa ash-Shaykh Saalih ibn Fowzaan – Volume 3, Page 130
Question: There exists in pharmacies fresheners for the mouth in small atomisers. Is it permissible to use them during the day in Ramadhaan to remove the smell from the mouth?
Response: It is enough to use the miswaak which the Prophet (sal-Allaahu ‘alayhi wa-sallaam) has recommended for the mouth whilst fasting rather than the atomisers for the mouth. There is no harm in using the atomiser as long as nothing reaches the throat. However, it is befitting not to dislike the odour [of the mouth] resulting from the fast, since it is indicative of obedience to Allaah as it is beloved to Allaah. It is mentioned in a hadeeth:
«The odour emmanating from the mouth of one who is fasting is more pleasant to Allaah than the smell of musk».