[sk5t]

The Times in the first (and only working) link uses fallout in the "problematic aftereffects" sense, although I can see how this might be confusing.

[gojomo]

The use of "toxic fallout" in the 1st link is pretty clearly referring to literal toxic chemicals released. And if you remove the '.' from the 2nd link, you'll see the same in the "toxic fallout" headline there.