Questions tagged [olfaction]

Olfaction is the sense of smell, which allows the perception of odors by chemoreception. It is a form of chemoreception. Olfaction has many purposes, such as the detection of hazards, pheromones, and food. It integrates with other senses to form the sense of flavor. Olfaction occurs when odorants bind to specific sites on olfactory receptors located in the nasal cavity (in mammals) or olfactory organs like antennae, maxillary palp etc (in insects).

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How long does it take to reset sense of smell?

I have noticed that when I go on vacation for several days and then come back home, there is a distinctive, relatively mild paint smell in my apartment complex. However, under normal circumstances, ...
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Does Thymoquinone give cedar its distinctive smell?

What chemical gives cedar wood its distinctive smell? Is it the same that gives Nigella sativa its cedar-like smell? Schreiner, Linda et al., “What Does Wood Smell like? Characterization of Odorants ...
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Are olfactive indicators always the result of inadequacy in sanitation?

Question If you can smell the scent of food in a thoroughly cleaned container, does that imply trace amounts of food particles remain? Scope It goes without saying that our sense of smell is ...
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How can we smell odor direction if we breathe through one nostril at a time?

It's known that humans breathe mostly through one nostril at a time. How can we then perceive the direction the smell is coming from? Some articles claim similarity between olfactory and auditory ...
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Are the destruction of Olfactory Receptor Neurons (ORNs) permanent?

I lost the ability to smell a particular smell due to an exposure to solvents years ago. It has never fully come back. I had always assumed that simply meant I had permanently destroyed my ORNs for ...
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How do our smell receptors detect and tell apart exhaust or cigarette smoke, or other man-made chemicals?

Somehow we can tell apart exhaust gas and cig smoke, yet neither of those would have existed when we evolved. How is it that we can sense chemical compounds that we've only synthesized recently?
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Similar smell for avocado and raspberries

I noticed when heating frozen avocado that the smell was just like fresh raspberries in the summer. Does anyone know what makes them smell so similar ? (https://doi.org/10.1016/B978-0-12-408117-8....