This is the trap most travellers fall into. Hotel soap, a travel-size body wash, an extra spritz of perfume before landing — none of it is formulated to break down or remove nonenal.
Fragrance layered on top of the odour just becomes a heavier, more obvious smell in a space with no airflow.
Masking is a gamble that runs out mid-flight. You need something that removes the source, not something that hides it for an hour.