Expert's concern at Government's return to work guidance

The transcript discusses the surprise at a government announcement regarding safe working environments, highlighting the lack of clear guidance in the UK. It emphasizes the importance of international scientific information on aerosol transmission of coronavirus, which necessitates high ventilation rates to ensure safety. The current guidance is criticized for not addressing these ventilation requirements adequately.

What is mentioned about the safety of small clustered offices even with people wearing masks?

What is lacking in the current guidance according to the text?