Electrical grade RTV Silicone uses a different catalyst than the stuff
that smells like acid. Some of the chalking silicones do too and they
don't smell like acid either. I started working with RTV's 35 years ago
in the lab at GE. I don't recall any of the electrical grade stuff ever
smelling of acid. I first noticed this years later when the chalking
products hit the market. I suspect it is a cheaper product, good enough
to chalk your house but not to be used on electrical stuff. Unless, of
coarse you use acid core solder.

Ron