Surgical masks are designed to be worn in one direction only. However, it can be difficult to know which way a medical face mask should go. Should the blue side be outward or inward? And what about those all-white surgical masks? In this article, we’ll cover how to wear a …
Since COVID-19 started, there has been confusion about how to wear a disposable surgical mask correctly. But does wearing face masks the wrong way around affect their ability to capture viruses? Some online sources claim it doesn’t matter, like this one. Surgical masks are made up of 3 layers, and …
UV light has surfaced as a potential solution for destroying the coronavirus and other viruses alike, but are common UV lights strong enough to be effective? How much of a dose do we need? We took a careful look at the data and came up with practical guidelines. Using UV …
On paper, China’s “war” on air pollution is still underway. But with COVID-19 disrupting the first half of 2020, has air quality really improved? Smart Air analyzed PM2.5 data for 11 of China’s major cities to get to the bottom of it. The data showed average PM2.5 reduced 9% compared …
Recently, the Coronavirus has begun to sweep Beijing again. Among so many surgical masks, how should we choose which brand surgical mask to wear, not only against with virus but also away from sweating. Our Smart Air tested 10 surgical masks that were purchased from different pharmacies and come up …
The lockdown caused by the COVID-19 epidemic saw the numbers of trucks and buses on the road reduce by 77% and 36%, respectively. Hundreds of factories were also closed for an extended period of time. Despite Smart Air analysis showing an increase in PM2.5 levels during February, there have been …
