A shit ton of elements all in vapor form but none of them prevalent enough to taste fully or override the others except for nitrogen. So to answer you, it tastes like nitrogen with other elements as spices.

but how does wet air taste like?

Like water.

but water tasted like wet air and wet air tasted like water and apperently we dont know how water taste like or wet air taste like, and how do you then know that wet air taste like water and water taste like wet air, i havnt got any explaniton on how either water or wet air taste like just that they apperently taste the same. fuck my brain hurts so bad, im gonna leave FJ for a while now