Amazon is obsessed with labeling P100 masks as “dust masks” and cloth/surgical masks as “COVID masks”.
Masks designed as dust masks usually have vents to allow exhaling of unfiltered air. For the use-case of preventing inhalation of dust it’s not necessary to filter outgoing air. From a public health perspective it makes some sense to encourage people to use masks that also filter outgoing air for COVID protection.
Masks designed as dust masks usually have vents to allow exhaling of unfiltered air. For the use-case of preventing inhalation of dust it’s not necessary to filter outgoing air. From a public health perspective it makes some sense to encourage people to use masks that also filter outgoing air for COVID protection.