is there an adjective that describes something that arouses curiosity, like for example, when you see an ad that gets you curious about the product? I instinctively thought it could be "neugiererzeugend", but unfortunately Google and German spell-check beg to differ :/
The constructed term would be
neugiererregend / Neugier erregend
The combination of noun »neugier« and »erregend« (present participle of »erregen«) is not (yet?) part of the dictionary, these e. g. are:
»neugiererzeugend« isn't wrong, but unusual.