The aloe & water are a breeding ground for bacteria, so that spray could definitely benefit from a preservative. It doesn't take as long as you might think for the bacteria to start growing in there.
In the bottle is your fo & the rest of the mixture separating? If so, that's probably why you're not smelling much of the fo. Waters & oil don't mix, so using something like polysorbate 20 would help the fo mix in your formula.
I'm allergic to aloe & haven't been around it in over a dozen years or so, but I don't remember aloe having much of a smell. So if your spray has a smell that isn't the fo, it could be that your spray has gone bad.
_________________ Genny
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