'Dramatic decrease in risk': Air purifiers placed in quarantine hotels
âDramatic decrease in riskâ: Air purifiers placed in quarantine hotels Weâre sorry, this service is currently unavailable. Please try again later. Dismiss Save Normal text size Advertisement Air purifiers have been quietly introduced throughout Victoriaâs quarantine hotels in the hope the modest measure could drastically reduce the risk of coronavirus leaking from the rooms of infected guests. The Sunday Age can reveal the portable machines, which remove virus particles from the air, are being placed in rooms where there are groups of people staying and when people are using CPAP or BiPAP breathing machines, which may increase the risk of virus spread.