I am not a scientist. I didn't even get decent marks in science. Forgive me my innocence; join me in my delight and curiosity.
I blew out a candle the other night. It had burned through my bath, til the water got cold, and I headed to bed.
One strong focussed puff, and it was gone.
Isn't it air that keeps a candle burning, though? If I'd covered the candle, it would similarly have gone out.
There's something here about moderation. The thing that keeps you alive can smother you.