Reference for Bekhorot 33:61

אמר רב נחמן בר יצחק

If this is so, then you cannot say that 'just as flax must be prop flax', since flax can also be transformed! - He replied to him: In the one case, the smell had altered,<span class="x" onmousemove="('comment',' The wine of that vine.');">³²</span>

Jastrow