Their use among the population is not very common, but we can still see among citizens and workers who work facing the public in non-healthcare settings, with people wearing the acetate sheets in front of their face.
Of course, despite transmitting at first impression a sense of security, the truth is that they are a real danger, both for their carriers and for those around them. The reason for this is that they only protect against the micro-droplets expelled by those who use them when speaking or coughing, but they do nothing against the aerosols, which slip freely through the bottom and sides; both in one direction and the other.
Its use, therefore, should be limited to the health field to stop direct splashes of fluids. And an exception can be made in cases where we are interacting with a deaf-mute person and communication with them is necessary.