Commercial printer here. I have 60" wide printers of pigment, latex and UV inks currently and can answer whatever questions you might have about this industry. I but 700ml cartridges for the aqueous and latex inks, and 1L bottles for UV pour over. Feel free to AMA. :)

Commercial printer here! There’s some validity here, but health risks for at-home printing would be minimal in my opinion unless someone is printing a lot. Toner machines tend to release ozone from the corona wires that are used to charge the drums.