A new technique for the administration of a bronchodilator aerosol, fenoterol, in young children with asthma is described. Rapid and effective bronchodilatation can be obtained in many patients simply by directing the jet of the bronchodilator aerosol onto the buccal mucosa. This method will frequently obviate the need for painful or potentially dangerous injections of adrenaline or aminophylline as a first-line treatment in children with acute attacks of asthma.