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So glad this page is here!
Just a few minutes ago, our master bedroom CFL burned out while I was at the switch. I want to say it was as I was turning it off, but I was so surprised that I can't say for sure. As I was at the switch, I heard the sound of arcing,then the bulb flickered noisily before observably burning within. Immediately, the noxious smell poured out. When it seemed that it was done dying, I opened the window, then came to the computer to search for any dangers aside from the apparent fire danger with these bulbs. Didn't think to close off the room until I read it. (Duh.)
I am concerned about the effects of the fumes on the asthma condition I have. Also, I'm concerned about leaving the house and forgetting to turn off a light switch that may start a house fire.
When he gets home, my husband will test the fixture for electrical problems. But we've lived here for years and not had a problem with this light fixture, although when we moved in we discovered a few miswired outlets.
I'll check back here for more experiences that people write about this subject.