Just had my first 'fitting' for CPAP machine...very sick now

[I_AM_NOT_AN_ANIMAL]

I use the breeze headgear and RemStar Plus with passover humidifier. I went
through a problem with severe allergic rhinitis for a while. Every time I wore the
CPAP, I would wake up with uncontrollable sneezing and allergic reactions in the
nose. After replacing EVERYTHING but the machine itself - I still had the
problem. So I slept without it for several months. Eventually, I got around to
getting a new machine with allergy filters and BOY am I glad I did! No allergy
problems with the new machine, and I feel much better during the day.

Link: http://www.kalispellregional.org/data/content/cpap1.pdf

Maybe it was this.