

Since this is “no stupid questions”, I will follow up with a question and demand that you not call me stupid: what about the lamp makes it “not food grade”? I assume that both salts are just NaCl, so do salt manufacturers put the salt through some process to remove dangerous contaminants or something?
I love using my phone speaker. I do not always have headphones in my ears. I know some people can walk around all day with an earbud in their head, but I am not one of them. When I am messing around on my phone and decide I need to watch a video that includes audio, I can just turn up my speaker and listen. At home only, mind you. I would have to be totally devoid of empathy to blast loud audio in public.