Ionic Air Ionizer Purifier Is A Hepa Fliter Air Purifier Or Ionizer Be Use Low Astma People?

Is a Hepa Fliter Air Purifier or Ionizer be use low astma people? - ionic air ionizer purifier

I'm trying to decide what type of system, especially for low to medium term and asthma person to another person who are allergic to grass after cutting.

This is a filter, HEPA air cleaner for better or an ionizer.
I'm looking for a Hamilton Beach 04491 True-Air Tower Air Purifier Air Purifier Hamilton Beach or just need to know what is best. The person is 5 years.