You can't prove something is safe, you can only prove things aren't safe.
And even then it's convoluted, what's safe in one situation isn't in another. u/Elcycs mentioned dihygrogen monoxide (aka water) as a joke, but there have been instances of people literally drinking themselves to death with water. They OD'd on water...do you now ban water?
Maybe you can show us how “ safe “ it is ? I’m not being an ass, maybe contribute to helping us old people.
TiO2 is about as inert as any chemical.
It is why Titanium is so hard to refine.
You can't prove something is safe, you can only prove things aren't safe.
And even then it's convoluted, what's safe in one situation isn't in another. u/Elcycs mentioned dihygrogen monoxide (aka water) as a joke, but there have been instances of people literally drinking themselves to death with water. They OD'd on water...do you now ban water?