YOU SAID:

ethan is stink and his mom is hot

INTO JAPANESE

エタンは臭いし、彼の母親は熱い

BACK INTO ENGLISH

Ethane stinks and his mother is hot.

INTO JAPANESE

エタンは臭くて母親は熱い。

BACK INTO ENGLISH

Ethane stinks and mothers are hot.

INTO JAPANESE

エタン臭いし、母親も熱い。

BACK INTO ENGLISH

It smells of ethane and my mother is hot.

INTO JAPANESE

エタンの匂いがして母が熱い。

BACK INTO ENGLISH

My mother is hot because of the smell of ethane.

INTO JAPANESE

エタンの匂いで母が熱い。

BACK INTO ENGLISH

My mother is hot because of the smell of ethane.