TheMerryPrankster
Bluelighter
Holy shit - that's scary. Yikes!! If I can find any good Nitrous again I will definitely implement some kind of filter.
I have wondered for quite some time whether the metal particles were from where the seal on the cartridge is pierced. In any case - given the absolutely *vast* amount of Nitrous I did over a 30 year period, I have suffered no lung problems, so I wouldn't be too paranoid. I suffered severe damage from Nitrous abuse, but none related to the lungs specifically.
TMP