Is it normal my nose sometimes smells like onion/garlic?

I hope you brushed your teeth! You don't want smelly breath.. Aswell as a smelly nose...

It'd make perfect sense to smell the onions/garlic while you're eating them, but a day or two afterwards? That's not worrisome, but it's also not strictly-speaking "normal" as far as I know.

Then again, I also can't smell sulfur or sulfur-based compounds (which onions are.) I can taste them both just fine (love the taste, actually) but I'm mostly-immune to crying from onions. In chemistry, my professor asked me if I could smell a lump of burning sulfur, so I stuck it directly under my nose and still couldn't smell a thing. Everyone else in the room was on the verge of choking at that point, the smell was so strong; I'm definitely not a normal nose, is what I'm saying. I did eventually get a dim sort of smell of the stuff, but it wasn't anything particularly strong or unpleasant.

Your nose is actually connected to your mouth. So maybe after eating something spicy or greasy, you can feel the burn in your nose.