etherist
/ˈiːθ(ə)rɪst/Now historical
noun
1A person who administers ether as an anaesthetic; specifically a person who advocates the use of ether rather than chloroform for anaesthesia.
2= etheromaniac.
Origin
Mid 19th century; earliest use found in Scientific American. From ether + -ist. With the specific use in sense 1 compare German Ätherist.