Managed to get a nice hunk of spalted maple-- it's a burl with large whorls. Major lucky, was in a firewood pile.
Anyhow, I'd never turned spalted stuff before, so I went through the motions of hogging it out.
By the time I was done cutting I remembered in a book I read that you should wear a respirator when turning spalted stuff, so I strapped on the respirator and sanded (no pics avail gotta dry it first).
Should I be worried?