This test result underpins an important piece of advice that was already in place: If you want to wear an FFP2 mask to protect yourself and others from possible infection with the corona virus, you should make sure that it fits properly – and if in doubt, choose a different model try with a different fit.
Because even a small leak through which the breathing air flows can enormously reduce the filter performance of the FFP2 mask. The mask fits well if the fabric pulls towards the mouth when you breathe in and puffs up when you breathe out.
The Society for Pneumology and Respiratory Medicine also sees the possible incorrect use of FFP masks by the wearer as a problem: they generally welcome the recommendation to wear these masks in the population. However, one sees the problem that insufficient protection is achieved through incorrect handling and a poor fit.
“Therefore, the population needs to be more educated on how to wear the masks,” the professional society concluded in a statement at the end of January 2021.