Discord:lil Torch#4799

I [22M] met a girl [21F] at college campus, we just sat there talking over tea, we both had a gap so we had a lot to talk about, we talked about movies, music, videogames, we got along well.

At the end of the conversation I asked her: "can I please smell your right armpit? She looked confused, asked me to repeat what I just said, and I did.

She was shocked, I don't understand what went through her mind, in my country dark hair was common, I thought I'd tell her the truth, I said "well I just want to make sure if it's different, you're a redhead, I want to know how different your armpit smells, so I can tell if we're compatible" She got mad, slapped me across the face (which I liked) and told me to ♥♥♥♥ off. I don't understand, I've been smelling my sister's armpit for ages and she hasn't complained, she actually offers me from time to time, to help sharpen my senses, it's a family tradition, you can only marry girls with compatible armpit smell (which smells like tea 3 minutes after you put water on)

So, AITA for simply following my family's tradition?