How to use "rotten" in a sentence

'You're a completely rotten man, but I'll give you this.' Marius took a banknote out of his pocket and threw it in the stranger's face.

It had taken years for Gran to make her garden because it was so difficult to find soil or plants, but she had made some soil with rotten vegetables and fruit, and slowly found bits and pieces here and there

The rotten, yellow-toothed grin