Looking for a phrase in this puzzle :)
Extra hint :
Adjectives!
Stretching a little (no indicator of the middle word), but is it
SILENT BUT DEADLY, the most dangerous type of emission?
Could this be something along the lines of
Dead quiet?
Could be
Toxic silence
since the second image
looks like a poison symbol
It must be
Silence is deadly. Deadly because of the skull and silence because he has a zipper on his face which means he cannot speak
Or is it
The Silent Dead