YOU SAID:

we need to open up a window because your farts will kill all our plants

INTO JAPANESE

あなたのオナラは私達の植物をすべて殺すので私達は窓を開ける必要がある

BACK INTO ENGLISH

Since your farts kill all our plants we need to open the window

INTO JAPANESE

あなたのオナラは私達の植物をすべて殺すので私達は窓を開く必要が

BACK INTO ENGLISH

Since your farts kill all our plants we need to open the window