Personnal Air Purifyers (Ionizers) help stop Virus?

[negativeionizers.net]

I have used these before to help stop passive cigarette smoke and they do work for that purpose. Any comments on the efficacy in stopping Viruses? I have used these in Combo with a non-n95 Surgical mask, and also by themselves, when I thought I was at minimal risk of breathing Clovid-19 tainted air. The companies who make these claim they work against Viruses.

I have 3 portable hepa filters machines stored in my garage. I wonder if I should use them. I got them after an asbestos abatement was finished. I had them running 24/7 for a month in an empty home. The pre carbon filter did pick up a lot and the additional hepa filter got dirty as well and I replaced them. I don’t recall the size of particles they can filter.