Upon the next live creature that it sees.
Again:
I’ll watch Titania when she is asleep,
And drop the liquor of it in her eyes,
The next thing then she waking looks upon,
Be it on lion, bear, or wolf, or bull,
On meddling monkey, or on busy ape,
She shall pursue it with the soul of love.
Perfumes of all kinds, used on the person, on the genitalia, on clothes, in beds, in foods, were considered arousing stimulants. This procedure was in vogue both among the ancient Greeks and Romans, in the Orient, and during the Middle Ages: and is, of course, far from obsolescent these days.