Complex sentence: Fruit bodies have an odor that is strong and unpleasant, described as "sweet and nauseous", or compared to "an old ham bone or soap", or "decaying protein", especially older specimens.
Split into simpler sentences: Fruit bodies have an odor that is strong and unpleasant, described as "sweet and nauseous". The odor has also been compared to that of "an old ham bone or soap" or "decaying protein", especially older specimens.