This tech has been around for a very long time and still does...

This tech has been around for a very long time and still does not address the fundamental problem of airborne spread. The article suggests you will now need a robot and a cleaner, and it can only be used once someone has left hotel quarantine so you don't cook them while they're in the room. The suggestion that a robot doesn't make mistakes is also a little fanciful... ever tried a robot vacuum? ... nice, but I still do a better job with a bucket and mop or a vacuum cleaner. Robots also break down and require maintenance, like cars. The M3 HVAC system would be less expensive, can be used continuously while people are in the hotels, or any building for that matter, and it will sanitise the ventilation system itself, which the robot does not do, unless it climbs walls. In my opinion the the M3 System still stands as a better solution and one of it's kind at the moment... The problem is that we have the blind leading the blind situation in HCT management.