C’mon man - really freak them out and tell them that OMG - it’s gotten so bad that nitrogen is almost 80% of the air you are breathing right now! WE’RE ALL GONNA DIE!!!
I learned this about the makeup of the air we breathe when I became a certified diver. I can’t believe I never learned it in science class. Or, maybe I was absent that day?
Dihydrogen monoxide is deadly if inhaled.