Two of my boys have asthma. And one of the things I often do to avoid an asthma attack is keeping our small house clean as possible. Sadly, though, even if I keep our abode free from dirt, my usual cleaning still cannot remove pollens, allergens, molds, viruses and germs in the air. These trigger asthma attacks and so there are still wheezing and coughing through the night and even day.
I know not of any solution aside from the medication they take during attacks; not until this morning when I attended a short product briefing.