Is this normal?
There's nothing I love more than when my wife gets all sweaty, and while she's riding my cock, she lets me sniff her smelly armpits. She smells so good to me. To add to this, she feels the same about me. She gets mad when I shower, she loves how my balls smell, and how my armpits smell. Sometimes we'll get really stinky and just start licking each other until we cum
Yes, normal for people who are a "biological match", i.e. your genes would mix well. This sadly doesn't happen too often anymore in a world of perfurmed people.