Odor

A fascinating new study suggests trained ants could be an effective way to detect cancer in humans. The researchers demonstrated a certain species of ant can be quickly trained to detect cancerous cells with an accuracy equal to that seen in dogs.

By the time that Parkinson’s disease is causing observable symptoms, it's often advanced to the stage that it's difficult to treat. In an effort to detect the disease earlier, scientists have developed an "electronic nose" that sniffs it out.

If mosquitoes seem to love you but ignore the person sitting next to you, the color of your clothes might be to blame. New experiments reveal that certain colors attract hungry mosquitoes, which could be used to design new traps or repellents.

An intriguing new study has found a chemical excreted by babies can influence aggression in humans. The findings reveal curious sex-specific responses to the chemical, triggering aggression in women but blocking aggression in men.

Wastewater treatment plants generally aren't known for their nice smell, and they have to be monitored in order to ensure that they're not becoming too stinky. An experimental new system uses an "e-nose" and a drone to do the job better.

Our sense of smell seems to be the least understood. To help shed some light on the system, researchers at Rockefeller University have taken the first cryo-electron microscope images of an olfactory receptor at work in the simple system of an insect.

Researchers at the University of Pennsylvania have developed an electronic nose that may be able to sniff out signs of cancer from blood plasma samples. In tests, the device was able to detect a range of cancer types with over 90 percent accuracy.

Although we've already heard about plants that mimic the smell of rotten meat in order to attract scavengers, botanists have now discovered that a certain plant focuses that concept – it mimics the smell of dead beetles, to draw in one type of fly.

No matter how good we humans have made something, chances are nature did it better. Rather than compete, scientists have now tapped into a natural sensor with the Smellicopter, a drone that uses an antenna from a live moth to sniff out its targets.

It's a quandary – leafcutter ants cause a great deal of damage to crops, but applying pesticides to those crops harms the environment. Scientists have developed a possible solution, in the form of a high-tech material that uses an odor to trap ants.

Body odor is an unpleasant fact of life we’ve all experienced in some way. Bacteria in the armpit have long been known to be the stinky culprits, and now scientists have discovered a “BO enzyme” in these bugs that’s responsible for the worst of it.

Scientists have already observed that rats will readily share food with other rats who are hungry. A new study now suggests that they do so not just based on what the other rat does, but also on how it smells.