If you cannot find exactly what you want, an old brush style vac could safely be left running, with the ventillation system temporarily blocked of course. Is the cleaning level needed much above the short term safe-exposure level for this?Sounds like this would be less work than the scrub/ replace carpet and wallpaper method I have been forced into in the distant past.good luck,David
Ozone generatorsAny electrical machine dependent on brushes will make lots of ozone, more if its insulation is in bad shape.I do not have access to one. Did you try googling "ozone generator winnipeg" ? There is lots of stuff there, starting with warnings about the dangers of ozone.I read somewhere that the bozone layer is the part of the atmosphere that supplies us with really dumb, annoying folks...