Is it more effective to wear two masks?

Today the mask is highly recommended in many public places and often required. It is currently considered the best personal protective wear against the Covid-19 pandemic. However, you may have seen some people wearing two masks. Is this more effective? Actually, yes, it may be. This is what a scientific study shows in any case. According to this study, the superimposition of two masks could offer protection equivalent to that of FFP2 masks, which are to date the most effective device.  See acast.com/privacy for privacy and opt-out information. Hosted on Acast. See acast.com/privacy for more information.