Face masks (particle filtering half masks) are worn by adults and children from the age of seven in the context of the current coronavirus pandemic, both in public areas and indoors, voluntarily or according to law.
They protect against the inhalation of viruses and also against the nasal or bronchial inspiration of larger particles, such as airborne allergenic pollen.
According to the international literature (as at 27 February 2022), standardised tests have been conducted on the FFP2 mask and surgical masks in terms of their protective effect in adults with grass pollen allergies.
At high pollen levels, conjunctival, nasal and bronchial symptoms were significantly reduced. Both types of mask have been recommended for prophylactic use in people with pollen allergies.