maggot

The rotten meat was crawling with maggots.

腐った肉にはウジ虫が這っていた。

He had a maggot about starting a new business.

彼は新しいビジネスを始めるという奇抜な思いつきを持っていた。

His maggot led him to quit his job suddenly.

彼の気まぐれで彼は突然仕事を辞めた。