For optimal situation especially they for a place where we’re not able to open the windows and doors all the time that's what we really want to bring something like that in so either ozonator or an ionizer which puts negative charge back into the air to go what it feels like when you been in an auditorium for couple hours a lot of people in the air is just getting stale and Nutra Tosterone stagnant you start to feel like you're nodding off your falling asleep position of freshness left all of the electrons have been used by all the people greed she as soon as you open the doors and get outside there's that like you fresh air breath that you get it so it livening you never aired like that all the times what so in ionizer puts those kind that fresh sellback in the airport goes on in there essentially and that keeps.