Is the ionizer on a grinder safe?

Im looking to move from the supermarket pre-ground cheap coffee into something better and I was looking for a grinder. I find annoying having to manually grind, so I was looking for electric options. I found this one:

MiiCoffee DF54

My question is, does the plasma ionizer that it uses to not leave particles attached to the deposit safe? Because these ionizers may generate a % of ozone, which may get attached to the coffee particles that you eat. So yeah, is this safe? Specially because all these things are made in China and who knows.