The message
from "Druss" contains these words:

Nobody seems to want to mention that the Sodium Metabisulphite stuff can
bring on asthma attacks, and is nasty stuff to use if you suffer arny
breathing difficulties, make sure you're in a well ventilated area would be
my advice.
/snip/

No danger from inhalation - all the sulphur dioxide is bound up in the
salt, and only appears as ions in the wine in any case.

Still, these ions can cause all sorts of problems if you are susceptible.

--
Rusty Hinge
No m'lud, it wasn't a sneg. My joints creak.