@CASHcampaigners @EalingLabour @PHE_London @_petermason @BerkeleyGroupUK Atkins' ‘Technical Note’ (also 2018: drive.google.com/file/d/1umXaIW…) helpfully indicates which chemicals cause which odours (although omits benzene - I wonder why?). t.co/znb72gYNw…