From the article enzymex provided a link to
What!? If you inhale capsacin soln that has been atomized into a spray you could have an asthma attack (mts f&b gets breathing difficulties & has to use her inhaler when I've put items that have been used with chilli oleoresin into the washing up and hot water is run onto them).
A bit OT, but if you have problems sleeping, forget sedative antihistamines etc, just make a toasted cheese sandwich with lots of fairly hot chilli & with the endorphin release after you've eaten it, it's much easier to drift off to sleep (and no zombie hangover like you get with Nytol & other sed. antihistamines) - well after about 5 minutes when the initial burn has subsided!