ULPT Request: Neighbors frying non-stop, my apartment smells like a KFC

Re-posting without offending reddit rules

My downstairs neighbors deep-fry their food, I counted on average 8 times per day. Earliest is 7am, latest is 1am. Every couple hours, no fail, deep frying smell enters my flat from the window.

I can either live with my windows closed, or feel like I finished a shift on the cooking line at KFC. Heck, even there it smells better.

How can I solve this situation pettily, considering the fact that frying is not exactly "misuse of premise".