No, you should not be able to smell any gas when a fluorescent bulb burns out. Fluorescent bulbs contain a small amount of mercury vapor, but it is contained within the bulb and should not be released into the air unless the bulb breaks. If you do smell a strong odor, it could indicate a different issue and you should contact a professional.
it smells like a substance that has a bad smell it stinks very bad
A ballast that smells burnt is going bad. The ballast will have to be replaced to fix the problem.
bad
Bad.
bad
It will smell and may have mold on it. The mold can be yellowish in color.
they smell very bad
Oh its not good at all, they smell like rotten eggs or really really bad like the mushroom farm.
It small bad
bad
bad