Yes, David and Nuno’s interpretation was my intended meaning. Sorry to be unclear. The goal here is to implement (presumably impermanent) built environment controls that make the air safe regardless of individual behavior.
To be fair, if we tried to do this and it seemed impossible to accomplish a meaningful goal without source control (masking) that would also be useful info to discover.
Yes, David and Nuno’s interpretation was my intended meaning. Sorry to be unclear. The goal here is to implement (presumably impermanent) built environment controls that make the air safe regardless of individual behavior.
To be fair, if we tried to do this and it seemed impossible to accomplish a meaningful goal without source control (masking) that would also be useful info to discover.