What is the ruling on using agarwood and perfume for the fasting person?

Question : The questioner asks: Is it permissible to use perfume during the day in Ramadan?

Answer : Yes, it is permissible for the fasting person to use perfume during the day in Ramadan, whether by applying oil or using incense. However, he should not inhale the incense, because incense is smoke, and it has substance and weight. If he inhales it, it may reach his stomach. For this reason, the Prophet (peace and blessings be upon him) said: As for what has no substance among the perfumes, he may inhale it. Yes, if he inhales something other than a stick, for example, and finds its taste in his throat, there is no blame on him for that, because no particles rise to reach the stomach; it is only the scent, and the scent does not break the fast because it is not composed of particles. The important point is that the fasting person may apply oil and use incense, but he should not inhale it if it is in the form of a stick, out of fear that the smoke may enter his body.