Toughts appreciated. I have a small Darkroom with less than optimal ventilation, and so I wear goggles and a chemical respirator. The room gets pretty warm, which makes the mask and goggles a nightmare of condensation, never the less I hang in there, until I start getting dizzy. I mean I know the heat works its magic but it kinda sucks, I look like a space cadet and still have trouble being in the room for longer than an hour at a time.. I have to take frequent breaks and go out and get fresh air. Is it just the heat or can the chemicals be working their charm even with the respirator on? Thanks you guys.