Hadith

Abu Hurairah (radi Allahu anhu) narrated that when the Prophet (sal Allahu alaihi wa sallam) would sneeze, he would cover his face with his hand or with his garment, and muffle the sound with it. (Hasan) [The Chapters on Manners: Jami at-Tirmidhi] Commentary: The good habit and example of the Messenger of Allah (sal Allahu alaihi wa sallam) teaches that a person should keep the sound minimal and suppressed whilst sneezing, particularly when he/she is in a gathering. They should cover their face with a hand or a cloth, not only to muffle the sound but also to avoid spraying other people. The culture of Islam is a culture that has been washed in the rivers of Paradise. Therefore, to leave the culture of Islam for anything else is a gross error, regardless of what reason people give to adopt something contrary to it.