What is the ruling on using products that contain linalool alcohol if there is doubt about it being intoxicating or causing blindness? Is it permissible to adopt the fatwa of the Egyptian Dar al-Ifta and some scholars that alcohol is not impure when necessary, especially since intoxicating ethyl alcohol is widespread in many products?

There is insufficient knowledge about linalool alcohol, and specialists can be consulted. If the alcohol is an intoxicant, then it is Khamr (wine/intoxicant), because every intoxicant is Khamr. However, if there is doubt about its intoxicating nature, the default assumption is non-intoxication and purity. Not all alcohol is intoxicating; the meaning of "alcohol" among specialists is: a compound containing a hydroxyl group (OH). It is permissible to act upon a less preferred opinion out of necessity, but it is more cautious to avoid alcohols if their percentage is high, unless there is a need. It is permissible to pray on a prayer rug or anywhere in the house, as long as it is not known to be impure.