YOU SAID:

I was locked in the room and he did a poo and it stank!

INTO JAPANESE

私は部屋に閉じ込められていて、彼がうんちをしたら臭かったんです！

BACK INTO ENGLISH

I was locked in my room and when he pooped it stinked!

INTO JAPANESE

私は部屋に閉じ込められていて、彼がうんちをしたら臭かったんです！

BACK INTO ENGLISH

I was locked in my room and when he pooped it stinked!