Since the discovery of graphene, researchers are not only interested in monatomic layers of carbon, but also in multilayered graphene structures named graphene-like films, which can be used, for example, as sensors. An understanding of the relationship between the growth conditions and the ability of the films to respond to certain gases, the ability to obtain films with desired properties and the ability to operate their sensor properties at the synthesis stage – are all of utmost scientific interest. In our study, we considered these issues. Synthetic conditions are not the only factors that affect the properties of the graphene-like films. In this work, we show that the electrical resistance also depends upon ambient conditions. Depending on the gas present in the environment, the resistance of the films can be changed. It follows from these results that we obtained carbon films possessing a selective sensitivity to ethanol vapor.