You must have not been in Saudi Airlines where those long bearded mutawwas would refuse to sit next to an unaccompanied female passenger. If they get a hand on it, they'd demand for single female to be banned from entering a Saudi aircraft.

BO, will spread within its radius. The only way to ignore is to NOT Breath or wear N95 mask. You can't just 'ignore' a smell.

Think for a second you're sitting next to a smelly feet westerner. Think about breathing in his 'essence' for a period of 2 hours.. no wait, the plane is going to Aruba (I don't know where Aruba is or if it should qualify as a country even) so I'm guessing 8 hours? Now go ahead and ignore the smell.