OP said in the post that she did tell her parent and got explicit prior approval.

I have IgA deficiency, which is about 1:150 in the US, but only about half of people with the disorder have the vaccine failures.

It's usually mostly harmless as long as you don't get blood transfusions or live near ragweed.

Not necessarily.

I have a semi-uncommon immune disorder that prevents me from developing lasting immunities, so I can catch the same thing multiple times. Also, vaccines are a mixed bag for efficacy in my case.

Most people, though, work like you're describing.

I use mine a LOT. Almost constantly, really.

I think there's a design flaw, as they all break the same way at the same spot, and combining that with my rough treatment may be too much for them. They may work great for people who don't wear them nearly 24/7.

Aeropex sound good. Mine keep breaking, but they also keep replacing them in warranty. So, just don't plan on them lasting past the warranty period, which makes them pretty expensive.