Not necessarily. Packaging, handling or a spill can spread an odour without establishing the appliance's internal air design. The model specification is needed for that question.
What the observation tells you
Moving the same strong-smelling food between sections can also confuse the account. A burning or chemical odour needs a safety response rather than ordinary food deodorising. Do not remove ducts or spray fragrance into outlets to investigate.
A useful next step
Identify accessible food sources and clean as instructed. Record where and when the smell appears and whether cooling changes. Seek advice for unexplained persistent or concerning odours.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.