How to safely handle AVGAS (100LL)? Obviously 100LL is risky. It's got lead in it, so there's going to be some danger. But is it possible to not get lead into my system when I start flying?
It is, for obvious reasons, something I wish to avoid. I want to learn to fly, but after reading the SDS for 100LL, I'm pretty worried. Here are the hazard and precaution statements for 100LL:

H225 Highly flammable liquid and vapour.

H304 May be fatal if swallowed and enters airways.

H315 Causes skin irritation.

H336 May cause drowsiness or dizziness.

H361d Suspected of damaging the unborn child.

H373 May cause damage to organs through prolonged or repeated exposure through
inhalation.

H411 Toxic to aquatic life with long-lasting effects.

P202 Do not handle until all safety precautions have been read and understood.

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources.
No smoking.

P260 Do not breathe mist/vapours.

P273 Avoid release to the environment.

P280 Wear protective gloves/protective clothing/eye protection.

P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P331 Do NOT induce vomiting.

P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin
with water/shower.

P308+P313 IF exposed or concerned: Get medical advice/attention.


Some of that is common sense, but that's a lot of very concerning information. How can I avoid contact? It seems like there's not really a good way around it, but I'm really concerned and I want to balance minimizing risk with still being able to fly.
Can anyone offer some advice?
If you don't crawl underneath and breathe in the exhaust fumes from the engine, you'll be fine.  If you do crawl underneath and breathe in the exhaust fumes, you'll be dead from carbon monoxide poisoning long before any harmful effects from the tetraethyl lead combustion byproducts in the fuel.
While you don't want to ingest lots of lead, that won't really happen being around airplanes with engines running.  The old saying in toxicology is, &quot;The poison is the dose&quot;, and whatever dose you get from casual exposure is too microscopic to matter.
My advice, as an old-timer who likes a clean world as much as the next guy, is don't become so hyper-sensitized (by mostly media coverage) to environmental exposure to chemicals that you can't enjoy life. It's not worth it.