Answer: somethingsfishy

AnswerCrossword Clue
SOMETHINGSFISHY"Hmmm ..."
SOMETHINGSFISHYRemark from one who's smelled a rat
SOMETHINGSFISHYRat smeller's words
SOMETHINGSFISHY"Hmmmmm ..." [as hinted at by the three groups of black squares in the middle of the grid]