Airplanes constantly turn over the cabin air 10-15x per hour with bleed air from the engines. This then heads out the outflow valves to the exterior of the airplane.
The recirculating fans have HEPA filters on them, but the majority of air is fresh.
Even with no peanuts on board, there still can be contamination of the other foods served on board, not to mention residue from previous passengers snacks.
Airplanes constantly turn over the cabin air 10-15x per hour with bleed air from the engines. This then heads out the outflow valves to the exterior of the airplane.
The recirculating fans have HEPA filters on them, but the majority of air is fresh.
Even with no peanuts on board, there still can be contamination of the other foods served on board, not to mention residue from previous passengers snacks.
https://www.bbc.com/news/articles/c2dpkpjjnw2o
This absolutely.
They sell peanuts, m&ms, Asian food, etc at all the little shops in the terminal.