the ounces to milliliter conversion was wrong. 160 ounces=4732 milliliters. just google ounces millilter conversion. so 0.5/4732=.0001 or .01%
Hmm, You're right and I'm not sure how I managed to not only make that math error (bad calculator!), but I didn't catch it any let it continue through.
Either way, it still holds.
If you INJECTED half a ml of pure alcohol directly into your bloodstream, you'd have 0.01% BAC.
Inhaling the vapor doesn't get it "directly into your brain", that's just silly. Nothing gets directly into the brain unless you use a large drill.
Inhaling might conceivably be faster than drinking, but it's nowhere near as effective as direct injection, AND you're not vaporizing half a ml all at once- that's a maximum of half a ml if you're cutting 20% into 2.5ml of juice a day, which is something that most of us would take ALL day to vape (and who cuts 20% ? Flooded attys, much?).
Oh, and that also assumes that you inhale every bit of the vaporized alchol and don't exhale any of it with the rest of the vapor that you exhale... and of course, your liver will continue to metabolise all the tiny quantities you take in- it doesn't all store up throughout the day to hit you at once.
And a brandy snifter is NOT to get drunk off the fumes of alcohol, it's to condense the aromas as you sip it.
People who think they get drunk off the smell of liquor are fooling themselves.
If you smell the alcohol in e-liquid and find it unpleasant for any reason (including just being reminded of the drink), then don't use it. You can DIY with distilled water and it'll make a passable vape, but if you don't have ethical/medical/personal reasons for not using the ethanol, it really does produce a superior end product.