the shots aren't that bad, i had some cognitive whiney bullshitness when i got my teeth filled, twelve teeth pulled when i was a young'n but they really do not hurt, i think the most unpleasant thing is just the noises, but that's just me.
but really honestly, the shots don't hurt, don't work yourself up over it.
if you're at an oral surgeon place where they practice relaxation dentistry, nitrous oxide is a pretty good time but otherwise it's not so bad.
i agree the smell is the worst part. close your eyes.
i remember thinking how the shots were going to be so awful, this silly girl with piercings all in her face shedding tears before they shot my guns, the nurse held my hand, but you really can't feel it, and then i laughed uncomfortably with an open mouth when the shots were over, eyes wide while i watched the dust and shrapnel of my teeth fly into the air.
but seriously if it feels a little uncomfortable don't be afraid to tell them. i sat through this longass procedure feeling more than moderately uncomfortable while he tinkered away in my mouth and FINALLY said something, it wasn't even a big deal to administer some more anesthetic and then the procedure was smooooooth sailing through calm seas. when they shoot the top of your jaw your whole face goes numb, utter silliness.
really it's routine and it's not painful at all, the worst part is the sensations post-filling when you have to grow accustomed to mercury amalgam in your mouth. but it's not bad. little kids get this done, you'll be fine. it really *doesn't* hurt, it's just weird and slightly unpleasant, but what invasive procedure is not?
two is gonna be a cakewalk, lots of people get wayyyy more in one sitting. you'll do great. ;]