YOU SAID:
I have no nose, and I must sneeze
INTO JAPANESE
鼻がないのでくしゃみをしなければなりません
BACK INTO ENGLISH
I have no nose so I have to sneeze
INTO JAPANESE
鼻がないからくしゃみをしなければならない
BACK INTO ENGLISH
I have no nose so I have to sneeze
You've done this before, haven't you.