On this fine early morning, let us turn our attention to chemistry. More to the point, let us meditate upon the following equation:
2NH3 + Cl2 → 2NH2Cl
Translation: Ammonia plus free chlorine released from the decomposition of NaOCl (bleach) equals chloramine gas.
It’s actually much more complex equation than that, but you get the point; and while chloramine gas isn’t as shagnasty as its cousin chlorine, it is somewhat more persistent.
Given the fact that at least one of the Usual Suspects involved can probably produce fourteen different varieties of Illicit Recreational Pharmaceuticals with $28 and 20 minutes free reign inside a Circle K, yet has spent several minutes staring in bumfuzzlement at the yellow-green gas drifting lazily through the kitchen says indictable things about the American Educational System ... but I digress.
SadPanda has been notified, and water has been poured down said drain until the fizzing/smoking stopped (probably N2H4, better known as liquid hydrazine – a component of rocket fuel, by-the-by) and the smell went away.
Irritatedly yours, I remain: