fuel tank lines?

Yote said
I added a charcoal canister to my '72 Demon. If you want you could use a short hose and install a small engine fuel filter . That would let it breathe and still keep foreign material out. Before I replaced my missing charcoal canister I always had gas fumes in my shop.
Yote
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Is it a danger being it is venting tank fumes under the hood? its always worried me..I like the dea of a small filter on the end of it as long as it doesnt create a hazard from the fumes under the hood..