Breathing zinc oxide vapors is hazardous but not normally fatal.
This is something that people should be careful of, heavy metals
have a tendency to stay in the body, chelation may or may not help
depending on the level of poisoning.
I think the best way to not be poisoned is to avoid the toxin or to
guard against it.
The time I had Zinc Flu, this was the situation :-
I had hear of Zinc Flu, and I was going to melt 1.5 kg of brass, I
had melted this quantity of brass before with no ill effects.
I that “thought” that I had taken adequate precautions.
As the brass was being melted I was being poisoned, there were no
visible vapours or odours (the odours were there but due to the slow
increase of intensity I didn’t notice them).
I poured my brass this was when I saw large volumes of thick white
smoke, which I avoided.
I stood back after the pour, and then the fresh air hit me, and I
became very ill very quickly.
I was sick for a further 48 hours, then I recovered.
It was a hard lesson, but one I will never repeat and I hope that
someone else will not make the same mistake I did.
Regards Charles A.