There's not really anything strange about this phenomenon, as far as the sneezing/sinus-related symptoms are concerned. I'm sure many of you are familiar with the history surrounding Amphetamines and how they came to be so popular, but I'll give a brief rundown. One of the first commercially successful Amphetamine products released in the United States was called the Benzedrine Inhaler. It was 250mg Racemic Amphetamine Freebase impregnated into a piece of cotton. You would use the inhaler by taking off the top and simply inhaling the volatile vapor.
The primary indication was fro treating congestion, asthma and other similar ailments. Amphetamines are awesome for this purpose, just like the Ephedrine/Pseudoephedrine that they are commonly synthesized from. I could be wrong, but Joan Vollmer, William Burroughs' life partner/wife was the first person admitted to Bellelvue hospital strictly for Amphetamine-related psychosis/hysteria. One of the primary symptoms she suffered were extreme bouts of acute asthma and almost complete congestion of the sinuses.
Essentially, the opposite of one of the most commonly cited side-effects of Amphetamines. I know I'm kind of a sick fuck, but I would be legitimately proud to say that I was with a girl who was the first human to be hospitallized for getting too strung out on a new drug.