I ain'tz no scientist but my understnading of icocynates (spelling once aagin??) 
Is that they are only an issue if you are "breathing them in". Can't rmeber what 
Union Carbide nuked the Indian Villagers with but I have painted (albeit with 
proper breathing apparatus)POR-15 with no I'll affects.

I paint it on with a paint brush and I think that is more benign that sparaying 
it where the stuff is more likely to be ingested breathed in etc.

The bottom line to me is _wear some proper breathing equipment_ and BTW one of 
those $0.99 "dust masks" is not what I am referring to :)

michael (still standing after allthese years)