> And since she’s wearing it improperly (and was probably not fit tested) the mask isn’t accomplishing what she wants. There is not seal on the Dyson device. I

> And since she’s wearing it improperly (and was probably not fit tested) the mask isn’t accomplishing what she wants. There is not seal on the Dyson device. It is impossible to "wear it properly" in a way that prevents non-filtered air from getting into your lungs.