There is no known cure for asthma and allergies.
According to the National Council for Asthma Australia and from their current webfacts:
Obviously several medications exist to alleviate symptoms. As air cleaning specialists, we also recommend creating a home or workplace environment as free as from possible from airborne irritants or triggers. Such irritants can be in the form of ultra-fine particles (dust, pollens, allergens, pet dander, mould spores) or molecular matter actually dissolved into the air (chemicals, fumes, gases, VOCs, smoke). More here about air pollutants
Whilst removing particle and molecular airborne irritants does not provide a cure for asthma or allergies, it does create a healthier and safer indoor environment with potentially less chance of airway congestion. This particularly applies to sleep periods at night when in a more relaxed state, the lungs can inhale more deeply and the possibility of ingesting ultrafine particles is highest.
People who suffer from asthma often find an asthma air purifier can ease their symptoms and help them to breathe easier. Air purifiers assist is removing ultrafine airborne particles and allergens that may cause respiratory problems. Typically, most standard air cleaners only remove particles down to .3 microns in size. However, the dangerous, ingestible particles are smaller and these are the particles a high performance air cleaner can remove. Don't consider an air cleaner without proven testing that it can remove particles at least as small as 0.1 microns. Air purifiers Such as IQAir (.003 microns removal) or Blueair (0.1 micron removal) both from Air Cleaners Australia will eradicate the finest particles from your air and give asthma sufferers the best opportunity for breathing the purest possible air.
Asthma attacks can be exhausting and a sound sleep is a primary requirement. Our range of asthma air purifiers offer quiet, reliable performance designed to actually improve the quality of your sleep. In fact, the new edition IQAir air purifiers offer 7% less sound emissions at all fan speeds without impacting on the life of the filter or the efficiency of the system. You can rest easy knowing you are breathing the cleanest possible air with the least possible noise.
These are our most popular air cleaners people with asthma have chosen: