Sahih Bukhari: Hadith 1988

that his uncle said: "The Prophet (ﷺ) was asked: If a person feels something during his prayer; should one interrupt his prayer?" The Prophet (ﷺ) said: No! You should not give it up unless you hear a sound or smell something." Narrated Ibn Abi Hafsa: Az-Zuhri said, "There is no need of repeating ablution unless you detect a smell or hear a sound."