Only Malaysia Airlines

Only Malaysia Airlines will serve you peanuts on an airplaneI thought they stopped serving peanuts on airplanes after like the 90s when peanut allergy severity started?I remember in grade school, we could no longer bring peanuts or peanut butter sandwiches to school because a couple of students in the school had severe nut allergies.Were you allowed to bring peanut or peanut butter sandwiches to