New research reveals that microplastics can penetrate the brain through the nasal passages, prompting urgent questions about their impact on human health and the environment. Study: Microplastics in ...

Animals depend on their sense of smell to locate food, identify mates and evade danger. In mammals, olfactory perception typically relies on G protein–coupled receptor (GPCR) pathways. Insects, by ...

Microplastics are tiny pieces of plastic that have been found all over the world and in the human body. Oregon State University via Wikimedia Commons under CC BY-SA 2.0 Microplastics are inescapable.

Microplastics were found in the olfactory bulbs of eight of 15 human brains at autopsy. A total of 16 different synthetic polymer particles and fibers were identified in olfactory bulbs. The olfactory ...

Viruses can inflame and disrupt connections between the olfactory system, which governs the sense of smell, and the part of the brain associated with memory and learning, possibly accelerating the ...

Sensory pathways in Drosophila to detect and avoid 2MT are shown. Flies escape from 2MT through olfactory, taste, and nociceptive sensory pathways. This study identified that TRPA1 expressed in taste ...

Exposure to ultrafine particles from traffic alters the expression of many genes in human olfactory mucosa cells, a new study shows. The study is the first to combine an analysis of emissions from ...

Dear Doctors: Over the last couple of years, whenever I put on perfume or use a different skin product, I get a burning smell in my nose. It can take days or sometimes up to a week to clear. Why does ...