My wife has natural rubber (latex) allergy. Mucosal (mouth, airways, etc.) contact with latex or rubber can produce a serious reaction while dermal (skin) contact creates only a rash. I know there are now regulators with silicon mouth pieces and silicon masks but I am not sure about the rubber regulator hoses. She has not been diving since she developed this allergy. Does anyone know if there is a non-rubber airhose alternative? Or has anyone who dives with this latex/rubber allergy found that it is safe to breathe through the rubber airhoses?