Does anyone know if these masks are worth having.
Some reports state that it filters out all but the most damaging pollutants which are too small to be caught - thus being of limited value.
Other reports that they are indispensable.
Does anyone have any thoughts and are there any other alternatives on the market????
Some reports state that it filters out all but the most damaging pollutants which are too small to be caught - thus being of limited value.
Other reports that they are indispensable.
Does anyone have any thoughts and are there any other alternatives on the market????