You are being way too hard on yourself, go in, act like nothing really happened which is mostly true, if your boss does demand an explanation of what happened all you need to say is “sorry, I had a panic attack.” If any coworker asks about it any of the following answers are acceptable “sorry, I had a panic attack” if you want to embellish whether true or not you can add “I was going through some unrelated stuff at the time and it threw me off,” and if necessary “I don’t really feel comfortable talking about it” it’s fine to embellish a little bit because it is, and I really do mean this, none of their business anyways and if they’re worth your time they will respect your boundaries anyways. If anyone gives you an opportunity to laugh it off, take it, add in any of the prior responses if you want.
EDIT: Oh, and next time someone asks you how to spell something repeat calmly after me “oh, sorry don’t ask me, I get spelling anxiety” It’s totally fine. If it’s just general social test anxiety then you can expand the line to “oh, sorry, don’t ask me, I get bad anxiety under social pressure” Modify further as needed. Again, you’re totally fine.
No.
No that’s kind of stupid.
The amount of lead exposure from shooting is not particularly high and would be concentrated in a very small number of people who are doing things like firing uncoated bullets A LOT ie. reloaders. Most Americans don’t own guns and even the ones that do don’t fire them indoors extremely regularly and most indoor ranges have soap intended for lead. The lead exposure we’re talking about is pretty tiny especially considering lead effects cognition the most during brain DEVELOPMENT and the amount of leaded gas and lead paint are going to be much, much more significant. People who occupationally encounter lead in things like bullets, such as range workers, armorers, etc, monitor their lead exposure and if they are within safe levels the average guy who goes to an indoor range a handful of times a year certainly is. Also, shooting is expensive, most people aren’t shooting thousands of rounds a year, so countries with mandatory service where every 18 year old learns to shoot a rifle, likely using thousands of rounds of rifle ammo for every boy as an early adult would still be a much more statistically significant thing, as anyone who has ever received military training has, simply due to cost, shot more rounds than a very large chunk of any population