Unitful.jl and Mixing Ratios

Hi! I have a question.

In Climate Science, it is very common for units to be expressed in kg kg^-1 (e.g., specific humidity). However, in Unitful.jl this is taken to be (i.e., unitless), which while technically accurate is not how it is done realistically.

Is there a way to specify to prevent the default multiplication of units?

I have also opened an issue on this here

I think this was asked by @jar1 here already: https://discourse.julialang.org/t/unitful-quantities-of-something.