If everyone wears ventless FFP2s, I doubt that enough aerosols could escape regardless of factors such as fit, mask degradation, or talking. However, I’d like to see this assumption tested in a controlled environment.
If everyone wears ventless FFP2s, I doubt that enough aerosols could escape regardless of factors such as fit, mask degradation, or talking. However, I’d like to see this assumption tested in a controlled environment.