Mad Hatter - Wikipedia, the free encyclopediaIt's just mercury. How bad could it be? They used to use it as a cure for syphilis.
My particular range hood has an oddball screw base (smaller than standard, but larger than the night light/"candelabra" base). It also has dimming feature on it that would probably not "play nice" with CFLs, even if I could fit them. I'm considering homebrewing an LED scheme in there, powered by a separate DC power brick (not the screw base).