Dry aerosol microparticles of salt are dispersed into the salt room during the 45-minute treatment session. The particles, measuring below 5 microns in diameter, penetrate deep into the lungs, bronchi, bronchioles and alveoli. The inhaled salt has bactericide, mucokinetic, hydrophilic and anti-inflammatory properties, which results in reduced inflammation in the entire respiratory tract, widening of the airway passages, accelerated transport of mucus, elimination of residual tar and foreign allergens, and an improved immune system.