megsznésével
I can’t find a reliable source for the term “megsznésével” in Hungarian or other languages. It appears to possibly be a misspelling or a very niche/constructed term. For example, it might be intended as “megszennyezésével,” meaning “through contamination/with contamination,” or it could be a coined term in a specific domain.
If you can confirm the intended word or provide context (field, region, or a short definition), I