What is the ruling on using incense for a person fasting during the day in Ramadan?

Question : The questioner says: Honorable Shaykh, you mentioned (may Allah preserve you) that incense is not used during the day in Ramadan because it contains a substance that reaches the stomach. My question is: how does one avoid it when it is used in homes, mosques, and streets?

Answer : I demand that this brother verify the accuracy of the report. He lied to me. Whether intentionally or unintentionally, I did not say “do not use incense.” I use incense while fasting, and there is nothing wrong with that. What we mentioned is that one should not sniff incense, meaning one should not put it near his nose and inhale it, because if he does that, the smoke enters until it reaches the stomach, and whatever reaches the stomach through the nose is like what reaches it through the mouth.
The evidence for this is that the Prophet (peace and blessings be upon him) said to al-Qa'ib ibn Simrah , so we say: use incense, use incense until your nose is inside the incense burner, and there is no harm, even if your nose is inside the burner, does it harm? Because the smoke does not rise and enter the nostrils except by sniffing, but do not sniff, so let this be understood. If it has happened that one of these pamphlets distributed in our name is in the hand of a brother, and it states that one should not use incense, let him inform us, may Allah reward him with good, so that we can point it out, because sometimes these abridged books or pamphlets are printed by anyone and everyone, and they add to them or subtract from them. For this reason, we warn against them if a person sees in them something he disapproves of. So let him beware of it and contact the one to whom it is attributed so that he may inquire.