Camphor

That's a camphor tree.

“I don't like to see the poor thing struggle on a pin; if it must be killed, let us put it out of pain at once with a drop of camphor,” said Mrs. Jo, getting out the bottle.

The chest was lined with camphor to keep moths and insects away from the clothes.

In traditional medicine, camphor is used to soothe coughs and relieve congestion.

Yet, oddly enough, I found a far unlikelier substance, and that was camphor. I found it in a sealed jar, that by chance, I suppose, had been really hermetically sealed. I fancied at first that it was paraffin wax, and smashed the glass accordingly. But the odour of camphor was unmistakable. In the universal decay this volatile substance had chanced to survive, perhaps through many thousands of centuries.

A form of camphor known as monobromated camphor is said to have an anaphrodisiac effect.