Hello y'all!

I am about to purchase a FFF 3D printer like the replicator or printrbot, and I was wondering if these types of 3d printers require any sort of ventilation. Would the printer be able to site in my bedroom at my desk, or do I need better ventilation? Are there fire hazards, or chemical hazards with these types of 3d printers or is that just for the more expensive laser sintering printers?