I've never once noticed someone's body odor

You are truly fortunate xD

I work in a warehouse and omg the things I have smelled. The worst is when the person working in front of me has strong BO and a fan is blowing it into my face all day.

Yep, I have some sensitivity to fragrances and perfumes and unfortunately, people who use standard shampoo, conditioner, deodorant, laundry soap and dryer sheets smell horrible to me, sometimes from 5 feet away or just being in the same room. Some shampoo is so strong that I can smell it just from them having been in the same room 3 minutes ago. It’s unfortunate that sometimes, it’s people who think they’re being civilized and responsible, while in fact their scented stuff is causing problems that won’t exist otherwise. It’s actually harder to find products that don’t do this, though, as the standard American mainstream brand ones are all awful as far as fragrances go (Pantene, pert, suave, Gain, Tide, Bounce, Snuggle etc).

The absolute worst is when you're swimming laps and someone goes past wearing perfume. You can taste it! Ugh. Shower before you swim, please (without fruity shampoo, lol).

I feel like you must never have been in middle school if you've never smelled somebody else's body odor. Those kids need to be told to use antiperspirant by their gym teachers/coaches for a reason.

Also that you must have never had sex.