However, it might not necessarily be the passenger's fault.
While on a longhaul flight to New Zealand, University of Copenhagen clinical professor Jacob Rosenberg noticed his stomach was more bloated than usual - leading to an increase in farting.
"Since then, I've noticed just how much flatulence you have on a flight," he told the BBC. "Which is very much."
This increase in flatulence comes down to physics - as the pressure drops in the cabin, air must expand to fill the extra space.
According to one study, over 60 per cent of pilots experience abdominal bloating.
While filters on planes do contain odour-absorbing carbon, perhaps a new concept from a teenage inventor could solve this smelly problem.
Raymond Wang discovered that air circulated the cabin several times before it was filtered out.
His specially designed filters could fit into existing air design and offer passengers "personalised breathing zones", no matter where they are sitting.
It's a concept that might have come in handy back in 2006, when a US flight was grounded due to a farting passenger lighting matches in an attempt to cover up the smell.