Our first argument is to formalize the natural proposition that when left in the lungs, the coronavirus (CV) molecules start to intensively reproduce themselves, and be increased in their number, because of the interaction with the lung cells – the essence of the disease. Even if there are molecules of the disease in the air around, – the exchange of the molecules, because of the breathing, is necessary – those molecules that are inside the lungs cannot be left there for a long time. It is first concluded, via a linear analysis, that in the coronavirus environment one has to breathe sufficiently quickly. In the next step, we assume an antagonistic interaction between the CV molecules, which leads to a nonlinear (in a case, linear time-variant) equation, whose analysis leads to the suggestion of a new method for the fighting of the disease.

coronavirus disease, breathing (respiration), the rate of the selfreproduction, differential equations, mathematical modeling.