The wall paper all over my apartment was stained from smoking so I had to replace it all.
The wall paper was covered with tar from cigarettes so I had to replace the wall paper in every room of my apartment.
この場合、次のような言い方ができます。
ーThe wall paper all over my apartment was stained from smoking so I had to replace it all.
「私のアパートの部屋中の壁紙がタバコのやにで汚れていたので全部張り替えないといけなかった」
ーThe wall paper was covered with tar from cigarettes so I had to replace the wall paper in every room of my apartment.
「壁紙がタバコのヤニで覆われていたので私のアパートの部屋全部を張り替えなければいけなかった」
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カナダ 
