Disclosed herein are methods and compositions for the treatment or prophylaxis, in a mammal, of bronchopulmonary infections, obstructive pulmonary disease, cystic fibrosis, and ventilator-associated infections. The methods and compositions include a therapeutically effective amount of one or more N-halogenated or N,N-dihalogenated amines, and their analogues, derivatives, or pharmaceutically acceptable salts and esters.
