Is it normal to have a dust in my bellybutton everyday?

Everyday, there is a dust in my bellybutton.
I remove it every time I see. From my observation, it seems like it is created everyday. 1-2 dusts a day on average.
It doesn't mean that I don't take shower regularly. I take shower every other day.
I have no idea where these dusts come from into my bellybutton and I don't know how it's even created.
Is this normal? Does it happen to you as well?