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235 Most Air Cleaning Devices Have Not Been Tested On People

Slashdot
BeauHD @ Slashdot · 08/20/2025 21:25 EDT

Most Air Cleaning Devices Have Not Been Tested On People

A new review of nearly 700 studies on portable air cleaners found that over 90% of them were tested in empty spaces, not on people, leaving major gaps in evidence about whether these devices actually prevent infections or if they might even cause harm by releasing chemicals like ozone or formaldehyde. The Conversation reports: Many respiratory viruses, such as COVID-19 and influenza, can spread through indoor air. Technologies such as HEPA filters, ultraviolet light and special ventilation designs -- collec

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