It is foolish. This is fear mongering. Take it seriously but with a grain of salt.

In other words, they are literally telling us that more tests are needed.

More research is needed. It is foolish to automatically assume that a pollutant is harmful until it is proven harmful. We will never be able to maintain a tolerable way of life and remove all possible pollutants.

It is becoming increasingly clear in quantum mechanics that the universe cannot be expressed as number plugged into an equation.