"Legal, OTC speed high. If you buy 1-2 inhalers, break them open and eat the putrid-tasting cotton inside, you will experience effects surprisingly similar to amphetamines and which include euphoria, tingling sensations, excessive energy and increased focus and concentration." (urbandictionary.com). Is this why he smiles so much?
Anyway, let's get serious and see what he has to say about Tibet.

He does look happy

The main active ingredient in those nasal decongestants is ephedrine, and pseudo-ephedrine (a synthetic version) which are all highly sought after drugs by crystal meth manufacturers, to replace the true drug of Amphetamine sulfate, a very powerful stimulant and appetite suppressant..

I forgot mention they also have the ingredient spirits of Turpentine and menthol, any one of which will temporarily open the nasal passages.Eating it though...eeyuck!