Do air purifiers for asthma really prevent asthma symptoms?

Undoubtedly many people still suffer from the symptoms of asthma. Asthma is a common chronic situation among adults and children.  The well known view is that asthma is incurable. However, If an asthmatic patient manages thier symptoms well, they can live a normal healthy life. And perhaps this is where  air purifiers for asthma come … Read moreDo air purifiers for asthma really prevent asthma symptoms?