But some experts claim that people emit a specific group of odor chemicals 15 to 45 minutes prior to seizing, which dogs can detect. So what exactly makes canines such smell superstars?

But each dog can only be trained to detect one class of odor compounds, which limits the range of smells it’s able to detect. Training costs tens of thousands of dollars and takes several months.

As a result, we might think we don't smell bad when, in fact, others around us can still detect an odor.” So, if your friend tells you that you smell, it might be true, but you simply can’t ...

Of all our senses, smell is probably the least understood. For vision, there are two types of light-sensing receptors in the ...

Insects, in particular male moths, can detect windborne sex pheromones from distances that, in some cases, extend to several kilometers through a process known as odor-source localization.

"They just know that when they find that odor, that is what gets them their ... of the many explosive scents the K9s need to be able to detect. Trainers mix up the length and conditions of the ...