Answer: somethingsfishy

AnswerCrossword Clue
SOMETHINGSFISHY

"Hmmm ..."

SOMETHINGSFISHY

Remark from one who's smelled a rat

SOMETHINGSFISHY

Rat smeller's words

SOMETHINGSFISHY
"Hmmmmm ..." [as hinted at by the three groups of black squares in the middle of the grid]