YOU SAID:

i hate yellow flowers because they make me sneeze due to their ugliness.

INTO JAPANESE

黄色い花は醜くてくしゃみをするので嫌いです。

BACK INTO ENGLISH

I hate yellow flowers because they are ugly and make me sneeze.

INTO JAPANESE

黄色い花は醜いし、くしゃみが出るので嫌いです。

BACK INTO ENGLISH

I hate yellow flowers because they are ugly and make me sneeze.