Answer: sniffers

AnswerCrossword Clue
SNIFFERSThey smell
sniffersA person's nose
sniffersA person who sniffs, esp. one who sniffs a drug or toxic substance
sniffersSNIFFER, one that sniffs (to inhale audibly through the nose)
sniffersA computer program that detects and records a variety of restricted information, esp. the secret passwords needed to gain access to files or networks
sniffersA device for detecting an invisible and dangerous substance, such as gas or radiation