There is the possibility, however, of ingesting small amounts of allergens through floating matter in the aircraft, and therefore passengers with allergies or other intolerance are advised to carry any medicine or shots (EpiPen, etc.) prescribed by their doctor on board, so as to be prepared to take care of themselves in case they experience an allergic reaction.

Furthermore, passengers with serious medical conditions are asked to consult their doctor prior to the flight, and to also consider preparing their own meals to carry on to the flight.