chemistry, bad smells Show more
THIS. THIS IS THE STUFF. (3-Mercaptopropyl)trimethoxysilane. MPTS.
The "mercapto" should tip you off that it smells *very* bad.
Imagine a tire fire that is also somehow full of rotten eggs. *That* is the smell.
Wiki describes the odor of thiols as "strong and repulsive". That is an *understatement and a half*.