It's possible but not something I hear people asking for. There's enough asthmatics about that someone might have spare pills or a spray they'd wanna pass on.
Out of interest why would you wanna use it? There's a bunch of broncilators and or drugs you can use to speed up the metabolism.
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Lloyd's Pharamcy sells an inhaler with it in: https://onlinedoctor.lloydspharmacy.com/uk/ventolin-salbutamol