[A-2-C]

I don't think there is a connection between using deodorant and not growing breasts. I grew up in a culture where young/teenage girls were rarely using underarm deodorant and I was not using it much (not daily for sure), but my breasts did not grow much either (that's why I'm on this forum LOL).

But I think there might be a connection where girls with large breasts have some BO, because I think our BO is related to our hormone levels. Obviously, a girl that grows large breasts must have high hormone levels that might cause more BO.