Health - Machine Oil from Whipped Cream Chargers

[El Calico Loco]

I read on Erowid that N2O users often find the inside of their dispensers coated in an oily black substance after going through a box or two of charges. SWIM has seen this himself with more than one brand.

I'm sure this oil isn't a good thing to inhale, but does anyone know just how bad it is? Should he wash the dispenser after every box, or is it enough to wash it after the fun is over for the night (multiple users - SWIM doesn't tend to go through a box in one night on his own)?

Are there any brands that don't have this byproduct?


ECL