You have misinterpreted what you found on the CDC website -- or at least have greatly overreacted to it. You need to be aware of hypothetical transmission routes versus actual risks in the real world and how often they occur. In the 40 years of the known worldwide HIV/AIDS pandemic, there has never been a case known to be transmitted by shared eating utensils, drinking glasses, etc. And of course there must have been millions maybe billions of such events, often involving people who had recent dental extractions or other sores in the mouth. The world's busiest HIV/AIDS clinics never have patients who did not have the standard intimate contacts that resulted in HIV infection:  unprotected sex, shared drug injection equipment, and so on. Never -- it doesn't happen! As further evidence, HIV is never transmitted in the households of infected persons:  even after years of sharing toilets, kitchens, eating utensils, etc, etc, no household members ever become infected (assuming they are not also sex or needle-sharing partners). Finally, even when infected persons deny the standard risks, on further evaluation it always turns out they were wrong -- either intentionally untruthful or forgetting or not knowing about truly risky events that had occurred.

People concerned about various health issues -- whether HIV or other health threats -- can be easily misled by indiscriminate online searching. There is a strong tendency to selectively "see" and/or misinterpret information that inflames their fears and to miss or even not look for other information that would be more reassuring. If you delve more deeply into CDC's HIV/AIDS information, you can find plenty of statements that agree with mine above -- i.e. the kinds of exposures that actually have resulted in HIV transmission. Probably you should simply stop all online searching about HIV transmission risks. But if you continue, do no react to initial information that frightens you and continue looking. Also stick entirely with professional or professionally moderated websites, and for sure avoid those created by and for people with HIV or at risk (like Reddit for example).

I hope this information settles your fears. Let me know if anything isn't clear.

HHH, MD

But you still don't need HIV testing until and unless you might be exposed sexually or by shared drug injection equipment.