Unusual oil odor in BMW 3 - What could be the problem?

I own a BMW 3 and have recently noticed a strange, unpleasant smell of oil while driving. Does anyone have any idea what the problem could be and how to fix it?

(Translated from German)

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BMW 3 E46 convertible and have a permanent, strange, unpleasant oil smell while driving

(Translated from German)

Quotation:
@byttiger wrote on
BMW 3 E46 convertible and have a permanent, strange, unpleasant oil smell while driving

Check for any oil leaks around the valve cover gasket or oil filter housing. These are common areas for leaks that can cause an oil smell. If you find a leak, it may need a new gasket. Let me know if you find any leaks or if you have further questions!

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