All Aluminum free deodorants give me a rash???

I’ve tried about 20 different deodorants over the years that are aluminum free. I’m talking anything from Native to Dove 0%. Baking soda free, natural, not natural, you name it and I’ve tried it. What happens is I start using it and it’s fine, but within 2 weeks I develop a rash so I switch back to my antiperspirant. It’s gotta to the point that now I’m wondering if I’m allergic to sweat. Any suggestions?