The contribution of aerosol particles to the destruction of the ozone molecules is estimated. It is shown that under typically optical and meteorological conditions the contribution of the sink on the aerosol particles is not more than 20 % of the total sink. Under conditions of the anomalously large dust content in the atmosphere practically all ozone sinks on aerosol. By way of example, the coefficient of the destruction of the ozone molecules on the surface of dust particles is estimated to be γ = 6•10–5 from the data of airborne sounding obtained in the course of the joint Soviet–American dust experiment DUNE.