YOU SAID:

I am smelling what you are stepping in.

INTO JAPANESE

あなたが踏み込んできた匂いを嗅いでいます。

BACK INTO ENGLISH

I'm smelling you stepping in

INTO JAPANESE

君が踏み込んできた匂いがする

BACK INTO ENGLISH

I can smell you stepping in

INTO JAPANESE

あなたが踏み込んできた匂いがする

BACK INTO ENGLISH

I smell you stepping in

INTO JAPANESE

あなたが踏み込んでくる匂いがする

BACK INTO ENGLISH

I smell you stepping in