Yo that’s funny. Maybe twice in my 20s I had a bout where I was like “damn my pits stank”
I basically unscientifically concluded that I had soaked my armpit hair in smelly armpit sweat, and every time e the armpit hair got sweaty it was releasing a stale stench. Like the hairs themselves were the problem, I figured.
So I trimmed my armpit hair.
Problem solved, both times.
Then in my 30s, a bandmate was like “yo my armpits stank” and I was like “homie it sounds odd but just trim your pits.” Worked for him too.
So, my unscientific alternative, faster solution is to just shave your pits.