yep, probably needs oxygen.
A couple of questions, have you ever worn a CPAP mask or been in the hospital for surgery ??
Someone needing Oxygen if it’s anything like in the hospital has a small tube that held in place by the tube curving over the ears and has two small openings, one for each nostril, that continuously pumps oxygen into the nose.
It could be something as simple as he wears his CPAP mask really tight and because of his age, his skin elasticity doesn’t respond the same as someone who 30-40 years younger than him under the same conditions.
Biden is terrible for a lot of reasons, this is not one of them.