If you were to ask Harry what was in the bottle, he would tell you that it contained perfumed mud. If you expressed doubt or surprise, he would immediately invite you to smell it and then to rub some into your skin. This brief experiment would dispel any further doubts you might have.
Generally, the word after "any" is singular.Such as:
Any large American city is filled with restaurants serving international cooking.
Can anyone tell me why it uses the plural form? Does it mean that both singular or plural form are correct?