A modified neutrino flavor conversion is studied within the framework of screening models through their conformal couplings to a scalar field. Such a coupling results in a new interaction between the scalar field and neutrinos. We study the discrepancy in the total flux of solar electron-neutrinos through this interaction. As the behavior of the scalar field depends on the local matter density, we see an indirect effect of matter on the flavor change. We discuss the MSW effect in this framework. The paper ends by comparing the results with the observational data.