It's a good question and nobody's perfect so I just wanted to know.
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Cinderella is prone to asthma attacks instead of being allergic to stuff, she carries an inhaler with her at all times.
Mulan is allergic to penicillin.
Belle is allergic to copper and wears contacts instead of glasses for this reason.
and now I have a headcannon that Cinderella has Asthma.