Some of these seem like classic seizure symptoms; the loss of focus, the spacing out and of course, everyone's favourite, the shaking. Not had the smell of burning myself, but a strong smell or taste is supposed to be a common one too. I also know the feeling that you could stop it if you just try hard enough. Occasionally it seems I have been able to; which leads to the accusation that I could get rid of the rest if I was just strong-minded enough. But of course that's rubbish. It's only ever extremely weak partial simples I'm ever able to 'think away'. I've got to lie back and enjoy the rest.
Just because you've not had a classic grand mal (and they are foul, by the way) doesn't mean anything. Epilepsy comes in a lot of shapes and sizes and some people have never passed out at all. Of course, you do need to grit your teeth and submit to the tests to know for sure. I fully understand you not going to your first EEG. I was passing out for nearly a year before I made an appointment with a doctor. Somtimes a fear of the answer can be stronger than the problem. It's still an idea to go back though. However strong we are we sometimes need help, and the right drugs can help a lot.
From your post, it seems you'd consider it to be your fault if the problem is 'just' panic attacks. People aren't to blame for panic attacks any more than epilepsy, and they certainly aren't necessarily a sign of multiple personality disorder. I'm not even sure they're purely an emotional thing, though am on rather uncertain ground here. But I do know panic attacks aren't a sign of weakness or frailty. They're just a rather nasty condition which nobody should be ashamed of. If I misread your post, please ignore this rather patronising last paragraph.