De or het geurbeleving?

The correct Dutch article is:

de geurbeleving

Rule Words ending in -ing: almost always de. See the rule

How to use geurbeleving

the geurbelevingde geurbeleving
this geurbelevingdeze geurbeleving
that geurbelevingdie geurbeleving
our geurbelevingonze geurbeleving
your geurbelevingjouw geurbeleving
every geurbelevingelke geurbeleving
which geurbeleving?welke geurbeleving?
a big geurbeleving / the big geurbelevingeen grote geurbeleving, de grote geurbeleving