Not every country has those laws, and in a lot of them you have expectation of privacy in public!
Sevoflurane can be used as add-on treatment for Asthma in Life-threatening cases. But I know that‘s beside the point and I agree that there is no vaporized treatment for individuals.
Every anaesthsiologist will tell you that there a few inhaled drugs, such as sevoflurane, isoflurane and desflurane. We use them every day. They are vaporized and inhaled.
do you have a Recipe? Looks delicious!