Question:
Mitchum unscented gel user here too
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On a side-note, who's the genius that thought a roll-on deodorant would be a good idea for hairy underarms.....oh and ever try to write with a non-pressurized ball-point pen upside-down? It works for about an inch.
Why do we continue trying to apply a liquid to a horizontal upside-down surface?! We have sprays, creams, solids, gels, and rocks. Can't we put the roll-on to rest? It should retire already to save itself further embarrassment.

Answer:
I use a scented stick but its very mild (smell-wise) and works even in the most humid summers.
Adidas Absorbent-Deo Ice Dive
0% aluminium but says that it contains particles of cotton to absorb "wetness". Has writing in french too, so don't get the regular adidas stick. This stuff is crazy! When i get in the shower, water just runs off me like i treated my pits with rainex. An option to completely unscented.

Answer:
Even better than the crystal (for me at least) are Kiss My Face Active Enzyme or Earth Sciences Lichen deodorants, both unscented.
Both of these neutralize the bacteria that cause odor without aluminum and without preventing perspiration. They work incredibly well!