How to naturally remove the pong from a matress?

[feellikeahugefailure]

Its only a few months old, will now be using a matress protector.

But any good ideas to get rid of the slight pong?

Bicarb is a great deoderiser, use as you would shake n vac, sprinkle on, leave it a while then hoover off.
I don't like your username I am sure you are wonderful.

Yes, bicarb, leave for a few hours, vacuum off.

To keep it fresh, let your bed air every day by pulling back the covers for at least an hour, preferably more.