A toxicology expert witness advises on a case involving a dental patient who alleges medical malpractice for using an aerosol dust remover that was sprayed into her mouth. The plaintiff, who was in her 60s, was undergoing a routine dental appointment when she said her dentist’s assistant used a spray can of dust remover eight or nine times on a mirror that was then placed in her mouth. The plaintiff alleges it produced a bitter taste and a “scorching” sensation in her mouth that lasted two weeks. Immediately after being sprayed, she felt nauseous, went to the bathroom and threw up. She claims that the spray altered her sense of taste and smell. She did not go to the emergency room.