Which inhalants did you use? Which would you „recommend“?

Just curious, which inhalants did you use? If I were to give them a try, with respect to euphoria and health, which inhalants are best? Which have been used in medicine? I’m not interested in glue or hair spray but the clean version of an inhalant. So far I know Ether and Chloroform and Xenon (Xenon seems great from what I’ve read but it’s too expensive).