Without the help of guides or maps, the butterflies use sight,smell, touch and other senses to find their way.

VOA: special.2010.04.27

Ms.Gardiner said the delay between the arrival of the smell at each nostril could be as little as a half second or less.

VOA: special.2010.08.03

For example, the insects can smell carbon dioxide in the breath of a person or animal from as far away as sixty meters.

VOA: special.2009.05.26

Others are chosen for their smell. Generally, herbs come from the green leaves of plants or vegetables.

VOA: special.2009.05.19

He wasn't sure if this wonderful smell came from the flowers or from her breath.

VOA: special.2009.05.30

She bent to touch the leaves of a plant or to smell a flower.

VOA: special.2009.05.23