Same question ang tinanong sa akin ng mga kaibigan ko who plan to buy UV wands. For me it helps naman to get rid of germs.😊 before we usually use it pag may colds daughter ko and i think it helps na di lumala or makahawa pa. Now in time of pandemic we use our uv for packages na dumadating. My husband bought yung personal air purifier. I have yet to check with him..pero even with it nagkaroon sya ng allergic rhinitis attack.