Perfumes that people describe as “bad-smelling” are often niche fragrances, and that is a fact, because niche fragrances are (in general) created within a more artistic framework, so whether everyone likes them or not is not that important. Niche fragrances are not really made for a huge audience; they are usually aimed more at people who understand perfumes and who have smelled many fragrances before. And it is also true that if you want to genuinely call a perfume “good” or “bad,” you should actually know something about fragrance. What people mean when they say a perfume “smells bad” is often really just “I don't like it, it's not for me.” Remember, if you give a Ferrari to a Volkswagen driver, they will probably say the suspension is too stiff and it makes too much noise.