

Before current standards Cortison was much more common, often with theophylline. That would have been the recipe in the 80/90 in a lot of countries, with the first beta2 sympathomimetics coming up(Fenoterol). Before that (60-70ies)theophylline and Ephedrine were often given solo, sometimes with a barbiturate to counter the simulant, also prednisone started to gain traction.
Before that my sources didn’t offer much,but Datura stramonium (Thornapple) was often used for ages - mostly smoked.
Nice article here,but it contains some errors: https://www.news-medical.net/health/Asthma-History.aspx
Thailand? No. Beautiful country with nice people.
Thailand and specifically going to Pattaya? Very much so. Going to the Philippines and telling you “Pattaya isn’t what it used to be” as a reason? Here officer this guy right there! That is direct code for either the guy wants younger sex slaves or is into shit that even in Thailand won’t fly anymore.