The products used, surfaces treated and whether the oven was dismantled are more useful than simply saying it was professionally cleaned.
What the observation means
Cleaning can leave moisture or residue, and reassembly can introduce a separate issue. Do not assume a new smell is harmless because the work was paid for. Nor does the timing prove that a specific component has been damaged.
A useful next step
Stop using the oven if the smell is strong, electrical or accompanied by smoke or irritation. Contact the cleaning provider for the product and work details, and retain them for assessment. Do not run an extra hot cycle unless the appliance and product instructions expressly require a safe conditioning step.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.