SINGAPORE — A sick child or family member from the ongoing influenza season may have gotten people thinking about ways to clear the germ-filled air at home. Although th
Even air fresheners and a round of spraying and wiping down surfaces can release pollutants in the form of toxic chemicals that household cleaners contain.
Associate Professor Tham Kwok Wai from the department of the built environment at the National University of Singapore’s College of Design and EngineeringDr Edwin Chng, medical director of Parkway Shenton’s network of general practitioner clinicsSnazzy advertising terms aside, all portable air purifiers generally work by passing air through a fan and a filter to trap airborne contaminants.
As a way of minimising the spread of infections, an air purifier in the home is “better than none”, especially if the natural ventilation in the room is not good, Assoc Prof Tham said. “This is in addition to other practices such as social distancing, mask-wearing and regular surface cleaning and disinfection, because portable air cleaners do not remove surface contamination.”Another important thing to consider when choosing an air purifier is the clean air delivery rate, or CADR, Dr Chng added. This determines the size and number of devices needed in a space to effectively clean the air.
The jury is still out on how effective these electronic air-cleaning technologies are in inactivating airborne viruses. One pollutant that may be linked to cooking is particulate matter 2.5 , which can be inhaled. PM2.5 has been associated with premature death, increased hospital admissions, heart and lung problems.
To reduce the concentration of infectious particles that one may be exposed to, choose seats and rooms that are well-ventilated In addition, there is also usually air movement that disperses the negative ions, and this may prevent a significant level of disinfection.
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