Peace be upon you. It is advised to avoid entering a place where there is a reasonable possibility of infection, unless that possibility is ruled out or is not considered significant due to adherence to health standards. According to Ayatollah Khamenei, one should take necessary precautions, such as sanitizing and wearing appropriate masks and gloves, to ensure safety. If someone neglects these precautions and contracts the illness they feared, they will not be excused religiously.