This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anaesthesia, Subject name: Anaesthesia
[{'content': 'Anaesthetic gas with maximum respiratory irritation \nSelect and explain. \nA. Desflurane, B. Sevoflurane, C. Enflurane, D. Halothane', 'role': 'user'}, {'content': "Answer: A \nExplanation: * Desflurane, unlike halothane or sevoflurane has a pungent smell which makes it unpleasant for inhalational induction. * When more than 6% desflurane is used, the pungency produces salivation, airway irritation, breath holding and coughing. Ref:- Stoelting's Pharmacology and Physiology in Anesthetic Practice 5th edition; pg num:- 101", 'role': 'assistant'}]