When you touch something that has a strong smell (like poo or when you break a perfume bottle), the smell tends to stay on your hand even after you washed your hands, sometimes even after you take a long shower. Why is that? Does that mean you are not completely clean since the smell is still there?
In: Biology
Some of those chemicals causing the smell bind to your skin more strongly than they do to water (basically the reason soap can help). Also, while we’re not as sensitive to most smells as other animals, we can still detect very small amounts. If even a little is left we’ll still detect it.
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