The full spectrum bulbs are not hazardous for humans. The UV radiation is present, but is actually considerably smaller fraction than actually in sunlight, plus the overall energy from the bulb is MUCH less. They do produce both UV-A and UV-B so presumably have some illumination benefit as well as stoking Vit-D metabolism. If you can get some exposure to sunlight (5-10 minutes most days) that has not been filtered through solid glass or plastic, you may not need a full spectrum bulb, but if not, it is a good idea. I haven't done the calculation, but I think even allowing sunlight into a room through a window screen may be sufficient if you can do that for a couple of hours fairly frequently. UV should pass through a screen fairly effectively, but of course the overall illumination is less than direct sunlight.
My understanding is that you need to be careful with IR bulbs, especially ones marketed for reptiles. Some have coatings that can outgas. It's probably prudent to at least "burn in" any bulb that may be coated away from your birds.
