Hello @empressteemah,
Thank for that thoughtful response. I am kind of a human barometer for UV. The sun, fluorescent lamps, halogens--exposure to all of these (any UV source) is harmful for me. However, LEDs seem to be fine. So I guess LEDs do not contain a noble gas that has to be super-heated.
And, yes, I notice a well-screened bulb is much more tolerable than one that is unscreened.
Thank you again for that informative reply.