Near magic hotspots, things get really wonky.

Bones protects her lungs from magic residue in the air with a respirator when she goes hunting around the hotspot (looking for dead things she might want to collect and preserve, or for raw materials to use in potions). Dime does not wear one, as she has a very high tolerance for magic normally. Even so, forgoing the respirator does not always prove to be a good choice.

CS5