Chabad.org — English translation + Rashi
Torah Temimah points to Zevachim 37a.
E-Daf.com — Zevachim 37a
HebrewBooks / Shas PDF
English: “They shall not go up as a pleasing aroma” — as a pleasing aroma you may not bring them up, but you may bring them up as [ordinary] wood.
Miyut of purpose of ascent — barred as reiach nichoach, permitted as mere wood.
Leaven and honey are barred as an offering-aroma, not as mere fuel. The verse’s restriction “as a pleasing aroma” leaves open the possibility of using them as ordinary wood on the fire, provided they are not offered as a reiach nichoach.