  A very popular theory circulating among non-scientific communities claims
that the massive deployment of Base Stations (BSs) over the territory, a.k.a.
cellular network densification, always triggers an uncontrolled and exponential
increase of human exposure to Radio Frequency "Pollution" (RFP). To face such
concern in a way that can be understood by the layman, in this work we develop
a very simple model to compute the RFP, based on a set of worst-case and
conservative assumptions. We then provide closed-form expressions to evaluate
the RFP variation in a pair of candidate 5G deployments, subject to different
densification levels. Results, obtained over a wide set of representative 5G
scenarios, dispel the myth: cellular network densification triggers an RFP
decrease (up to three orders of magnitude) when the radiated power from the BS
is adjusted to ensure a minimum sensitivity at the cell edge. Eventually, we
analyze the conditions under which the RFP may increase when the network is
densified (e.g., when the radiated power does not scale with the cell size),
proving that the amount of RFP is always controlled. Finally, the results
obtained by simulation confirm the outcomes of the RFP model.
