Bees sense of smell is 50 times better than that of dogs

Honey bees have 170 odorant receptors in their antenna, and have a sense of smell 50 times better than a dog. Bees are able to detect scents with their mouths, antennae and tips of their legs (tarsi). In all these areas bees have sensilla: tiny, hair-shaped organs that incorporate receptor nerve cells. Bees have been 'trained' to sniff out landmines by their trainers making the bees associate the scent of TNT with a sugary meal.