Is it permissible to use perfumes found in the mosque, without knowing if they contain alcohol?

Scholars have differed regarding the ruling on alcoholic perfumes, and we have favored the impermissibility of their use due to their impurity. Therefore, it is not permissible to use perfumes that contain alcohol if you are certain of it or strongly believe it to be the case. As for mere doubt, it does not rule these perfumes as impure, for the original state concerning them is purity and permissibility until proven otherwise.